background image

User’s Manual 

11 

1024–65535, reducing the risk of outsiders being able to guess which ports you are using. 

6. 

Enable HTTPS

 

We suggest you to enable HTTPS, so that you visit Web service through a secure communication 
channel. 

7. 

MAC Address Binding

 

We recommend you to bind the IP and MAC address of the gateway to the device, thus reducing 
the risk of ARP spoofing. 

8. 

Assign Accounts and Privileges Reasonably

 

According to business and management requirements, reasonably add users and assign a 
minimum set of permissions to them. 

9. 

Disable Unnecessary Services and Choose Secure Modes

 

If not needed, it is recommended to turn off some services such as SNMP, SMTP, UPnP, etc., to 
reduce risks. 
If necessary, it is highly recommended that you use safe modes, including but not limited to the 
following services: 

  SNMP: Choose SNMP v3, and set up strong encryption passwords and authentication 

passwords. 

  SMTP: Choose TLS to access mailbox server. 

  FTP: Choose SFTP, and set up strong passwords.   

  AP hotspot: Choose WPA2-PSK encryption mode, and set up strong passwords. 

10. 

Audio and Video Encrypted Transmission

 

If your audio and video data contents are very important or sensitive, we recommend that you 
use encrypted transmission function, to reduce the risk of audio and video data being stolen 
during transmission. 
Reminder: encrypted transmission will cause some loss in transmission efficiency. 

11. 

Secure Auditing

 

  Check online users: we suggest that you check online users regularly to see if the device is 

logged in without authorization.   

  Check device log: By viewing the logs, you can know the IP addresses that were used to log in 

to your devices and their key operations. 

12. 

Network Log

 

Due to the limited storage capacity of the device, the stored log is limited. If you need to save the 
log for a long time, it is recommended that you enable the network log function to ensure that 
the critical logs are synchronized to the network log server for tracing. 

13. 

Construct a Safe Network Environment

 

In order to better ensure the safety of device and reduce potential cyber risks, we recommend: 

  Disable the port mapping function of the router to avoid direct access to the intranet devices 

from external network. 

  The network should be partitioned and isolated according to the actual network needs. If 

there are no communication requirements between two sub networks, it is suggested to use 
VLAN, network GAP and other technologies to partition the network, so as to achieve the 
network isolation effect. 

  Establish the 802.1x access authentication system to reduce the risk of unauthorized access to 

private networks. 

  Enable IP/MAC address filtering function to limit the range of hosts allowed to access the 

Summary of Contents for DHI-ARD821-W2

Page 1: ...Wireless Panic Button User s Manual ZHEJIANG DAHUA VISION TECHNOLOGY CO LTD V1 0 0...

Page 2: ...es methods to help you solve a problem or save time NOTE Provides additional information as a supplement to the text Revision History Version Revision Content Release Time V1 0 0 First release March 2...

Page 3: ...and the manual Please contact customer service for the latest program and supplementary documentation There might be errors in the print or deviations in the description of the functions operations an...

Page 4: ...ements Connect the device to the adapter before power on Strictly abide by local electrical safety standards and make sure that the voltage in the area is steady and conforms to the power requirements...

Page 5: ...d Warnings III 1 Introduction 1 1 1 Overview 1 1 2 Technical Specifications 1 2 Checklist 3 3 Appearance 4 4 Adding the Button to the Hub 5 5 Installation 6 6 Configuration 7 6 1 Viewing Status 7 6 2...

Page 6: ...ications Type Parameter Description Function Indicator Light 1 for multiple statuses pairing communication and more Button 1 Remote Update Cloud update Signal Strength Detection Yes Low Battery Detect...

Page 7: ...s 95 mm 59 5 mm 30 5 mm 3 74 2 34 1 20 L W H Installation Wall mount handheld Net Weight 18 g 0 04 lb Gross Weight 48 g 0 11 lb Certifications DHI ARD821 W2 868 CE DHI ARD821 W2 CE FCC Casing PC ABS P...

Page 8: ...Checklist Figure 2 1 Checklist Table 2 1 Checklist No Item Name Quantity No Item Name Quantity 1 Panic button 1 4 Bracket optional 1 2 Quick start guide 1 5 Screw package optional 1 3 Legal and regula...

Page 9: ...button sends alarm messages to the hub Flashes green once Sending messages to the hub Flashes green for 0 5 seconds Successfully sent messages to the hub Flashes red for 0 5 seconds Failed to send me...

Page 10: ...that the hub has a stable internet connection Make sure that the hub is disarmed Step 1 Go to the hub screen and then tap to add the button Step 2 Tap to scan the QR code at the bottom of the panic b...

Page 11: ...tton supports wall mount and can be handheld This section uses wall mount as an example You need to buy a bracket to install the button Figure 5 1 Installation Step 1 Drill 2 holes in the wall accordi...

Page 12: ...attery Level The battery level of the button Fully charged Sufficient Moderate Insufficient Low Operation Mode The working mode of the button LED Brightness The brightness of LED lights Accidental Pre...

Page 13: ...an alarm event type and then tap OK Intrusion Intrusion alarm Fire Alarm Fire alarm Medical Help Medical alarm Panic Button Panic alarm Set by default Gas Alarm Gas leak alarm If you select an alarm t...

Page 14: ...User s Manual 9 Parameter Description Delete Delete the online accessory Go to the hub screen select the accessory from the list and then swipe left to delete it...

Page 15: ...rmation of firmware updates released by the manufacturer We suggest that you download and use the latest version of client software Nice to have recommendations to improve your device network security...

Page 16: ...dio and video data being stolen during transmission Reminder encrypted transmission will cause some loss in transmission efficiency 11 Secure Auditing Check online users we suggest that you check onli...

Page 17: ...User s Manual 12 device More information Please visit Dahua official website security emergency response center for security announcements and the latest security recommendations...

Page 18: ...User s Manual...

Reviews: