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Specifications

Input voltage: 10.2-14Vdc. 
Input current (excl. heater): 116mA maximum.
Operating temperature: -31 to 158°F (-35 to 70°C) 
without heater. 
Operating humidity: 15 to 90%, non-condensing.
Maximum read range: 5" (125mm).
Approvals: EN300330, EN301489, UL 294 Access 
Control Systems.

4

Using the Reader

3

Reader Connections

9600-0531. 

Installation and User Instructions for S849 

Readers, Issue 1.2.2 12th October 2011. © G4S Technology, 
2011. 

FCC Notice: 

This device complies with Part 15 of the FCC 

Rules. Operation is subject to the following two conditions: (1) 
This device may not cause harmful interference, and (2) this 
device must accept any interference received, including 
interference that may cause undesired operation.

Any unauthorized modification to this device may void the 
authority of the user to operate it. 

All trademarks acknowledged. HID is a registered trademark of 
HID Corporation.

Present the card face-on to the reader until you hear

"bleep". Cards can be presented in rapid

succession; there is no

 

need to wait for the green or red LED to extinguish before presenting another.

If the reader has been enabled for user-code mode at the controller, you can gain access by pressing 
the # key, entering your card number, then pressing the * key. 

 

 

   

 

 

 

 

 a 

 

 

 

   

 

If the amber LED flashes, enter your PIN. If you make a 
mistake, the red LED is lit for a moment, then the flashing 
amber prompts you to try again.

These auxiliary LED indicators can be configured to 
operate in conjunction with conditional commands.

When this LED is lit, the lock is released and you may 
open the door.

Green (access 
granted) LED

Red (access 
denied) LED

Flashing amber 
(PIN) LED

Alarm LED

Switch LED

This is lit if you do not have access rights to gain entry, or 
if the reader could not read your card (in this case, move 
the card away, then present it again).

About the Reader LEDs

}

TX-

Reader

TX+

0V

TX-

RX+
RX-

+V

Do not use

Do not use

Do not use
Do not use

12Vdc

TX+

RX+

RX-

0V

Note:

 To configure the 

reader as a 20mA reader, 
connect the jumper 
across the center and 
"C/L" pins of LK1.

WE

C/L

Current Loop  R e a d e r  Connections

12Vdc

Apply 0V to 

activate door-

Green 

Red 

Data 0
Data 1

0V

Reader

Gn

0V

0s

Do not use
Do not 

+V

Not Used

1s

Do not use
Rd

Note:

 To configure the 

reader as a Wiegand 
reader, connect the 
jumper across the center 
and "WE" pins of LK1.

WE

C/L

Wi e g a n d   R e a d e r  Connections

Connect shield at 
controller end only 
(attach to case)

Connect shield at 
controller end only 
(attach to case)

Twisted Pairs 

(use Belden)

Note:

1). Consult local AHJ (Authority Having Jurisdiction) when installing access control readers and locking mechanisms to any 
portal in an egress path.
2). The use of Fail Closed / secure configuration shall be determined by local building codes and the local AHJ.
3). Wiring methods shall be in accordance with NEC (National Electrical Code) ANSI/NFPA 70.

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