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G4[QR]

 

   

User Manual 

P a g e

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    Copyright©2021 ZKTECO CO., LTD.  All rights reserved. 

Copyright © 2021 ZKTECO CO., LTD. All rights reserved.

 

Without the prior written consent of ZKTeco, no portion of this manual can be copied or forwarded in any 
way or form. All parts of this manual belong to ZKTeco and its subsidiaries (hereinafter the "Company" or 
"ZKTeco"). 

Trademark 

  is a registered trademark of ZKTeco. Other trademarks involved in this manual are owned by 

their respective owners. 

Disclaimer 

This manual contains information on the operation and maintenance of the ZKTeco equipment. The 
copyright in all the documents, drawings, etc. in relation to the ZKTeco supplied equipment vests in and 
is the property of ZKTeco. The contents hereof should not be used or shared by the receiver with any 
third party without express written permission of ZKTeco. 

The contents of this manual must be read as a whole before starting the operation and maintenance of 
the supplied equipment. If any of the content(s) of the manual seems unclear or incomplete, please 
contact ZKTeco before starting the operation and maintenance of the said equipment.  

It is an essential pre-requisite for the satisfactory operation and maintenance that the operating and 
maintenance personnel are fully familiar with the design and that the said personnel have received 
thorough training in operating and maintaining the machine/unit/equipment. It is further essential for 
the safe operation of the machine/unit/equipment that personnel has read, understood and followed the 
safety instructions contained in the manual. 

In case of any conflict between terms and conditions of this manual and the contract specifications, 
drawings, instruction sheets or any other contract-related documents, the contract 
conditions/documents shall prevail. The contract specific conditions/documents shall apply in priority. 

ZKTeco offers no warranty, guarantee or representation regarding the completeness of any information 
contained in this manual or any of the amendments made thereto. ZKTeco does not extend the warranty 
of any kind, including, without limitation, any warranty of design,  merchantability or fitness for a 
particular purpose. 

ZKTeco does not assume responsibility for any errors or omissions in the information or documents 
which are referenced by or linked to this manual. The entire risk as to the results and performance 
obtained from using the information is assumed by the user. 

ZKTeco in no event shall be liable to the user or any third party for any incidental, consequential, indirect, 
special, or exemplary damages, including, without limitation, loss of business, loss of profits, business 
interruption, loss of business information or any pecuniary loss, arising out of, in connection with, or 

Содержание G4[QR]

Страница 1: ...instructions carefully before operation Follow these instructions to ensure that the product is functioning properly The images shown in this manual are for illustrative purposes only For further deta...

Страница 2: ...design and that the said personnel have received thorough training in operating and maintaining the machine unit equipment It is further essential for the safe operation of the machine unit equipment...

Страница 3: ...mendments are meant for improvement better operations of the machine unit equipment and such amendments shall not give any right to claim any compensation or damages under any circumstances ZKTeco sha...

Страница 4: ...rch and development of biometric verification procedures and the productization of biometric verification SDK which was initially widely applied in PC security and identity authentication fields With...

Страница 5: ...eld names are inside square brackets For example pop up the New User window Multi level menus are separated by forwarding slashes For example File Create Folder Symbols Convention Description This imp...

Страница 6: ...CIAL VERIFICATION 14 2 6 3 FINGERPRINT VERIFICATION OPTIONAL 17 2 6 4 CARD VERIFICATION 20 2 6 5 COMBINED VERIFICATION 23 3 MAIN MENU 24 4 USER MANAGEMENT 25 4 1 ADD USER 25 4 2 SEARCH A USER 40 4 3 E...

Страница 7: ...RAMETERS 83 10 3 1 ATTENDANCE EVENTS 83 10 3 2 STATUS MODE 93 10 3 3 WIDGET FUNCTION RULES 100 10 3 4 CAMERA MODE 101 10 3 5 VERIFICATION SETTINGS 102 10 3 6 VALIDITY PERIOD OF USER INFORMATION 103 10...

Страница 8: ...e reader which supports QR code PDF417 Data Matrix MicroPDF417 Aztec and so on And it can scan the T A A C QR code on the ZKBioSecurity Mobile APP In addition to the optional ID and IC card modules G4...

Страница 9: ...a g e 9 Copyright 2021 ZKTECO CO LTD All rights reserved Recommended Facial Expression Recommended Standing Posture Note During enrollment and verification please maintain natural facial expression a...

Страница 10: ...finger or Ring finger Avoid using the Thumb or Little finger as they are difficult to accurately press onto the fingerprint reader Note Please press your fingers onto the fingerprint reader firmly fo...

Страница 11: ...appears as shown below Note 1 Tap on to open the verification screen and enter the Personnel ID 2 Tap on to open the main menu If a Super Administrator has already been registered for this device othe...

Страница 12: ...nual P a g e 12 Copyright 2021 ZKTECO CO LTD All rights reserved 2 5 Virtual Keyboard The device supports two types of Keyboards namely English and Chinese Note Long press the icon to switch between t...

Страница 13: ...the system It is recommended for Administrator users Tap on the icon on the main screen to open the 1 1 Password verification mode 1 Enter the User ID and press OK If a user has registered a Face Fin...

Страница 14: ...appears as shown below 4 If the verification is failed the error message appears as shown below 2 6 2 Facial Verification 1 N Face Verification In 1 N Face Verification mode the device compares the a...

Страница 15: ...ate registered to the corresponding User ID Press on the main interface and open the 1 1 Face Verification mode 1 Input the User ID and click OK If a user has registered a Fingerprint Password and Car...

Страница 16: ...P a g e 16 Copyright 2021 ZKTECO CO LTD All rights reserved 2 After the prompt Please verify your face follow the prompts for face verification 3 After successful verification the success message appe...

Страница 17: ...elow 2 6 3 Fingerprint Verification Optional 1 N Fingerprint Verification In this verification mode the device compares the fingerprint that is being pressed onto the fingerprint reader with all of th...

Страница 18: ...ive User ID This method can be used when the system has trouble in recognizing the user s fingerprints Press the icon on the main screen to enter 1 1 fingerprint verification mode 1 Enter the User ID...

Страница 19: ...CO LTD All rights reserved 2 Press the finger on the fingerprint reader to proceed with verification 3 After successful verification the success message appears as shown below 4 If the verification i...

Страница 20: ...a g e 20 Copyright 2021 ZKTECO CO LTD All rights reserved 2 6 4 Card Verification 1 N Card Verification Place the registered card on the card reader If the verification is successful the message appe...

Страница 21: ...creen to open the 1 1 card verification mode 1 Enter the User ID and press OK If a user has registered Face Password and Fingerprint in addition to his her card and the verification method is set to F...

Страница 22: ...G4 QR User Manual P a g e 22 Copyright 2021 ZKTECO CO LTD All rights reserved 2 Swipe the card to verify 3 After successful verification the success message appears as shown below...

Страница 23: ...tion methods A total of 21 different verification combinations can be used as shown below Note 1 means or and means and Combined verification requires users to register the information needed to compl...

Страница 24: ...reselected ringtone when the designated time is reached It will stop ringing after the alarm time is elapsed System Settings Set the Network Date and Time Attendance parameters Cloud service Wiegand D...

Страница 25: ...ht 2021 ZKTECO CO LTD All rights reserved 4 User Management 4 1 Add User Tap on the User Management interface to open the interface to add a user Add User Details Enter the User ID in the User ID fiel...

Страница 26: ...s 24 characters 2 Bydefault the device supports 1to 14 digitsof User ID 3 User ID can be changed at the first time they are used to log in to the system After first login the User ID cannotbe changed...

Страница 27: ...l P a g e 27 Copyright 2021 ZKTECO CO LTD All rights reserved Register User Photo 1 Tap on the icon to open the camera interface User should face the lens and then adjust the position Tap on the icon...

Страница 28: ...ng the photo Register Verification Modes The verification mode is the method used to verify a login This includes registering Face Password Fingerprints optional or Card number Select a verification m...

Страница 29: ...age Select the icon on the left or right side of the screen and then tap on the finger you would like to register a fingerprint 2 Press the same finger on the fingerprint reader three times The Green...

Страница 30: ...TECO CO LTD All rights reserved 4 If the fingerprint is successfully registered a Continue to enroll the next fingerprint dialog box will appear Tap on Yes to register the next fingerprint or No to re...

Страница 31: ...G4 QR User Manual P a g e 31 Copyright 2021 ZKTECO CO LTD All rights reserved...

Страница 32: ...ter the prompt is successful click Save Register Password 1 On the user registration interface click Password to enter the register password page Enter the password in the Enter the password field the...

Страница 33: ...rights reserved 2 If the password in both the fields does not match you have to re enter the passwords Delete Overwrite registered passwords 1 On the User management interface tap a user in the user l...

Страница 34: ...1 ZKTECO CO LTD All rights reserved 2 Press Delete Overwrite in the dialog window that pops up Register Face On the user registration interface tap on Face to open the face registration page Move and...

Страница 35: ...types of permissions namely Normal user and Super Administrator After a Super Administrator is registered on the device normal user can only verify their identities using the verification methods tha...

Страница 36: ...l rights reserved 1 On the User Management interface tap on a user in the user list to view the user s information 2 Once you have entered the User Information interface tap on User Role and select No...

Страница 37: ...on process The employee will only be able to verify an account during this period and will be regarded as an invalid employee after this period It is valid between the starting and ending date this of...

Страница 38: ...G4 QR User Manual P a g e 38 Copyright 2021 ZKTECO CO LTD All rights reserved 2 Set the User validity rule Verification Mode 1 Tap on the Verification Mode field on the User information interface...

Страница 39: ...G4 QR User Manual P a g e 39 Copyright 2021 ZKTECO CO LTD All rights reserved 2 Select Verification Mode and then tap on OK...

Страница 40: ...ual P a g e 40 Copyright 2021 ZKTECO CO LTD All rights reserved 4 2 Search a User 1 Tap on the Search bar on the User Management interface and enter the keyword Note Search the users based on their ID...

Страница 41: ...G4 QR User Manual P a g e 41 Copyright 2021 ZKTECO CO LTD All rights reserved 2 Automatically the search result will be displayed based on the query conditions...

Страница 42: ...G4 QR User Manual P a g e 42 Copyright 2021 ZKTECO CO LTD All rights reserved 4 3 Edit a User 1 Select a user on the user list...

Страница 43: ...nual P a g e 43 Copyright 2021 ZKTECO CO LTD All rights reserved 2 Edit the required details of the user Note The User ID field cannot be modified For other details of adding the user details please r...

Страница 44: ...G4 QR User Manual P a g e 44 Copyright 2021 ZKTECO CO LTD All rights reserved 4 4 Delete User 1 On the User Management interface tap on the button in the upper right corner of the interface...

Страница 45: ...e lower right corner and a window will pop up Select the checkbox if the user wishes to delete the Attendance records simultaneously Tap on OK This option can be selected or left unselected based on y...

Страница 46: ...ntrols the electric lock to be in unlock state Valid value 1 10 seconds 0 second represents disabling the function Gate Mode Toggle between ON or OFF switch to get into gate mode or not When set to ON...

Страница 47: ...y Input Configuration Sets the door unlock time period and auxiliary output type of the auxiliary terminal device Auxiliary output types include None Trigger door open Trigger Alarm Trigger door open...

Страница 48: ...G4 QR User Manual P a g e 48 Copyright 2021 ZKTECO CO LTD All rights reserved Tap the date on which time rule settings is required Set the starting and ending time and then press OK...

Страница 49: ...lock the door is open all day 00 00 to 23 59 or when the ending time is later than the starting time such as 08 00 to 23 59 3 The default time zone 1 indicates that door is open all day long and it ca...

Страница 50: ...G4 QR User Manual P a g e 50 Copyright 2021 ZKTECO CO LTD All rights reserved Add Holiday 1 Tap on the Holiday setting interface to open the Holiday setting interface...

Страница 51: ...G4 QR User Manual P a g e 51 Copyright 2021 ZKTECO CO LTD All rights reserved 2 Select a date and the type of the holiday Enable Repeat if the holiday repeats every year...

Страница 52: ...G4 QR User Manual P a g e 52 Copyright 2021 ZKTECO CO LTD All rights reserved 3 Click Finish and a new holiday is created successfully...

Страница 53: ...g e 53 Copyright 2021 ZKTECO CO LTD All rights reserved Edit Holiday On the Holiday interface tap on the holiday to modify Delete Holiday 1 On the Holiday interface tap on icon in the upper right cor...

Страница 54: ...Combination function refers to a function that requires any member in different access control groups or multiple members in the same access control group to verify in turn without sequence within a c...

Страница 55: ...reated access control group the Verification mode Time period and Holiday can be set accordingly The interface is given below 5 6 Anti Passback Setup Anti Passback function is to detect whether the us...

Страница 56: ...the user can check in again or if it is a check in record the user can check out again otherwise the alarm will be triggered Note When the user has no record during the first verification the anti pa...

Страница 57: ...6 Attendance Search The user s attendance records will be saved in the device making it easier to find users attendance records The users can search for Attendance Logs and Visitor photos 1 Tap Attend...

Страница 58: ...First or Last name of an employee in the search bar Automatically the system displays the users with information that is relevant to the search query 3 Tap on the icon to access the following window...

Страница 59: ...G4 QR User Manual P a g e 59 Copyright 2021 ZKTECO CO LTD All rights reserved...

Страница 60: ...as shown below 7 Data Management The Data Management menu is used to manage the Device s data including Deleting Attendance data Deleting All data Deleting Attendance photos Deleting Unregistered use...

Страница 61: ...biometric data privileges of the Super Admin user photos user data and access control data Delete Attendance Photos 1 Deletes all the attendance photos 2 Deletes invalid user accounts 3 Deletes the a...

Страница 62: ...The USB management functions include upload from USB download to USB and USB disk settings Menu Function Description Upload from USB Uploads the USB disk content to the device Download to USB Downloa...

Страница 63: ...d 9 Alarm Management Once an alarm has been set the device will automatically play the preselected ringtone when the designed time is reached It will stop ringing after the alarm time elapsed 9 1 Add...

Страница 64: ...G4 QR User Manual P a g e 64 Copyright 2021 ZKTECO CO LTD All rights reserved 2 Set the time to trigger an alarm Select the Hour and Minute...

Страница 65: ...a g e 65 Copyright 2021 ZKTECO CO LTD All rights reserved 3 Duplicate The default is set to Only once To copy the settings to other days tap on the Duplicate button and a window will pop up Select the...

Страница 66: ...G4 QR User Manual P a g e 66 Copyright 2021 ZKTECO CO LTD All rights reserved 4 Tap on Alarm Sound and a window will pop up Select a ringtone and tap on OK...

Страница 67: ...G4 QR User Manual P a g e 67 Copyright 2021 ZKTECO CO LTD All rights reserved 5 Tap on Save and the alarm will be successfully added The alarm will be enabled by default on the specified time...

Страница 68: ...G4 QR User Manual P a g e 68 Copyright 2021 ZKTECO CO LTD All rights reserved 6 Toggle the Alarm button to change the alarm s status...

Страница 69: ...G4 QR User Manual P a g e 69 Copyright 2021 ZKTECO CO LTD All rights reserved 9 2 Edit Alarm 1 Select an alarm from the alarm list...

Страница 70: ...G4 QR User Manual P a g e 70 Copyright 2021 ZKTECO CO LTD All rights reserved 2 Edit the alarm time and other settings as per the requirements See Add Alarm for more details...

Страница 71: ...G4 QR User Manual P a g e 71 Copyright 2021 ZKTECO CO LTD All rights reserved 9 3 Delete Alarm 1 On the Alarm Management interface tap on the button on the upper right corner...

Страница 72: ...G4 QR User Manual P a g e 72 Copyright 2021 ZKTECO CO LTD All rights reserved 2 Select the alarm that you would like to delete and then tap on button on the lower right corner of the interface...

Страница 73: ...G4 QR User Manual P a g e 73 Copyright 2021 ZKTECO CO LTD All rights reserved 3 Tap on OK to delete the alarm...

Страница 74: ...t 2021 ZKTECO CO LTD All rights reserved 4 The alarm is now deleted and will not appear on the list 10System Settings The System Settings maximizes the device s ability to meet the user requirements b...

Страница 75: ...l P a g e 75 Copyright 2021 ZKTECO CO LTD All rights reserved In the main menu tap on System Settings 10 1 Network Settings On the system settings list tap on Network Settings to enter the Network Set...

Страница 76: ...cannot modify the Ethernet Network Address parameters DHCP Enable DHCP to assign an IP address to the internal network or network service provider If DHCP is on you cannot manually set the IP of the...

Страница 77: ...evice the connection password must be entered correctly On the Network Settings interface tap on Comm Connection Settings Menu Function Description PC Communication password It is used to gain the con...

Страница 78: ...G4 QR User Manual P a g e 78 Copyright 2021 ZKTECO CO LTD All rights reserved 10 2 Date and Time In system settings tap on Date and time to enter the date and time settings interface...

Страница 79: ...G4 QR User Manual P a g e 79 Copyright 2021 ZKTECO CO LTD All rights reserved 10 2 1 Date and Time Settings 1 Tap on Set Date and swipe up and down to set the Year Month and Day Tap on OK...

Страница 80: ...G4 QR User Manual P a g e 80 Copyright 2021 ZKTECO CO LTD All rights reserved 2 Tap on Set Time and swipe up and down to set the Hour and Minute Tap on OK...

Страница 81: ...G4 QR User Manual P a g e 81 Copyright 2021 ZKTECO CO LTD All rights reserved 10 2 2 Date and Time Format Settings 1 Tap on Date Format and select the desired date format...

Страница 82: ...e If disabled the user can set the date and time Sync Cloud Server Time Synchronizes the time of the Server of the software to which the device is connected Sync Network Time Synchronizes the actual t...

Страница 83: ...n Attendance Parameters to open the attendance parameters settings interface 10 3 1 Attendance Events Attendance Events are used to record the clock in out status There are 6 default attendance status...

Страница 84: ...R User Manual P a g e 84 Copyright 2021 ZKTECO CO LTD All rights reserved Add Attendance Events Tap on Attendance Events 1 On the Attendance Events interface tap on to open the Attendance Event interf...

Страница 85: ...G4 QR User Manual P a g e 85 Copyright 2021 ZKTECO CO LTD All rights reserved 2 In the attendance event creation wizard tap on Start...

Страница 86: ...21 ZKTECO CO LTD All rights reserved 3 Enter the Name and Status Value of the new attendance event Note The maximum length of the name is 24 characters The status values must be unique and cannot be d...

Страница 87: ...G4 QR User Manual P a g e 87 Copyright 2021 ZKTECO CO LTD All rights reserved 4 If the input status value repeats or exceeds the limit the following message will appear...

Страница 88: ...G4 QR User Manual P a g e 88 Copyright 2021 ZKTECO CO LTD All rights reserved 5 If the Attendance Event is created successfully the success message appears as shown below...

Страница 89: ...G4 QR User Manual P a g e 89 Copyright 2021 ZKTECO CO LTD All rights reserved Edit Attendance Events 1 Select an attendance event...

Страница 90: ...2021 ZKTECO CO LTD All rights reserved 2 Tap on Name or Status Value to edit Note The first 6 attendance events cannot be edited The status values must be unique and cannot be duplicated For further...

Страница 91: ...Copyright 2021 ZKTECO CO LTD All rights reserved Delete Attendance Events 1 Select an attendance event and tap on the icon on the upper right corner Note The first 6 events cannot be deleted so the d...

Страница 92: ...G4 QR User Manual P a g e 92 Copyright 2021 ZKTECO CO LTD All rights reserved 2 Tap on OK on the appearing window to delete the attendance event...

Страница 93: ...is now deleted and will not appear on the list 10 3 2 Status Mode There are three modes for attendance statuses Timed State Transition Displays different attendance statuses at different times Fixed M...

Страница 94: ...1 ZKTECO CO LTD All rights reserved Timed State Transition 1 After selecting the Timed State Transition button tap on the button to set the related parameters 2 On the Timed State Transition interface...

Страница 95: ...l P a g e 95 Copyright 2021 ZKTECO CO LTD All rights reserved 3 When the Repeat daily option is enabled the following screen will be displayed 4 Tap on the Time button and swipe up and down to set the...

Страница 96: ...2021 ZKTECO CO LTD All rights reserved 5 When the Repeat Daily option is disabled the following screen will be displayed 6 Tap on the button for the date you would like to set then swipe up and down t...

Страница 97: ...Copyright 2021 ZKTECO CO LTD All rights reserved 7 After applying the settings the interface appears as shown below Note The settings process for Clock out Break out Break in Overtime in and Overtime...

Страница 98: ...G4 QR User Manual P a g e 98 Copyright 2021 ZKTECO CO LTD All rights reserved Fixed Mode 1 The status mode is set to Fixed Mode tap on the button to open the Fixed Mode options menu...

Страница 99: ...nual P a g e 99 Copyright 2021 ZKTECO CO LTD All rights reserved 2 In the Fixed Mode selection menu select the attendance status that the user would like to set Disable Mode Select the Status Mode as...

Страница 100: ...User Manual P a g e 100 Copyright 2021 ZKTECO CO LTD All rights reserved 10 3 3 Widget Function Rules Tap on the Execute toggle button to enable The main interface will display the attendance status w...

Страница 101: ...irements Tap on the Camera Mode to set the required parameters No Photo User s photo will not be saved during verification Capture Photo and Save User s photo will be taken and saved during verificati...

Страница 102: ...recognize the QR code image on the ZKBioSecurity Mobile APP captured by the lens or the QR code scanner Find the attendance QR code on the ZKBioSecurity Mobile App Align it with the QR code scanner at...

Страница 103: ...he full capacity the device will automatically delete a set value of old blocklisted photos When the value is set as 0 the function will be disabled Delay duration of the Confirmation Screen This is t...

Страница 104: ...G4 QR User Manual P a g e 104 Copyright 2021 ZKTECO CO LTD All rights reserved...

Страница 105: ...n name mode http will be used such as http www XYZ com while XYZ denotes the domain name when this mode is turned ON Disable Domain Name Server Address IP Address of the ADMS Server Server Port Port u...

Страница 106: ...G4 QR User Manual P a g e 106 Copyright 2021 ZKTECO CO LTD All rights reserved 10 5 Wiegand Settings Tap on Wiegand Settings in the system setting list to access the interface as shown below...

Страница 107: ...s interface Menu Function Description Wiegand Format The Wiegand value could be 26bits 34bits 36bits 37bits or 50bits Wiegand in bits Number of bits of Wiegand data After choosing Wiegand input bits t...

Страница 108: ...bit of 19 to 35 bits the 2 to 17 bit is facility code 18 to 33 bit is card number and 34 to 35 bit is manufacturer code Wiegand36a EFFFFFFFFFFFFFFFFFFCCCCCCCCCCCCCCCCO It is composed of 36 binary num...

Страница 109: ...Wiegand format Failed ID If the verification is failed the system will send the failed ID to the device and replace the card number or Personnel ID with the new ones Site code It is similar to device...

Страница 110: ...rface tap OSDP Output to enter the OSDP output settings interface The device can connect the external devices such as a printer via RS232 OSDP output is used for setting the Serial port address Baud r...

Страница 111: ...G4 QR User Manual P a g e 111 Copyright 2021 ZKTECO CO LTD All rights reserved...

Страница 112: ...nu Then the device goes to standby mode The options include 30 seconds 1 minute 2 minutes 5 minutes 10 minutes or disabled When this feature is disabled the menu including sub menus will not automatic...

Страница 113: ...ill receive the voice prompts Voice prompts will not be received when this setting is disabled When disabled and then re enabled the volume level will be set to 1 Touch prompt This option enables disa...

Страница 114: ...llected and instantly compared with fingerprint data using a 1 1 algorithm This is converted into a value that is then compared to a set value If the value of the scanned fingerprint exceeds that of t...

Страница 115: ...nition will be which may lead to unrecognizable On the contrary if the threshold is too low the accuracy of face recognition will be lower which may lead to misjudgment and other phenomena The default...

Страница 116: ...anywhere on the screen during testing to continue testing Tap on the Back key to exit testing Audio Test The device automatically tests the audio prompts by playing the audio files that are stored in...

Страница 117: ...ons Function Description Select language Select the language as English or Simplified Chinese Restore Factory Settings Restores the settings of the device including communication settings system setti...

Страница 118: ...splays the current device s capacity of users fingerprints optional facial templates Administrators Attendance logs Attendance photos Unregistered user photos and User photos Device Information Displa...

Страница 119: ...e upgraded through a USB drive with the upgrade file Before performing this operation please ensure that the USB drive contains the correct upgrade file and is properly inserted into the device Note I...

Страница 120: ...provider of this device we will assume no direct or indirect responsibility for any consequences that may result from your use of this device 4 If you would like to dispute human rights or privacy iss...

Страница 121: ...ent Name Hazardous Toxic Substance Element Lead Pb Mercury Hg Cadmium Cd Hexavalent Chromium Cr6 Polybrominated Biphenyls PBB Polybrominated Diphenyl Ethers PBDE Chip Resistor Chip Capacitor Chip Indu...

Страница 122: ...www zkteco eu Copyright 2021 ZKTECO CO LTD All Rights Reserved...

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