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Mount the backplate using countersunk headed screws 
adjacent to the opening edge of the door and at a 
convenient height (recommended height is 5' (1.5m) to top 
of unit).

If fixing hole ’A’ is used then the breakout must be removed 
and the screw must not protrude.
Feed the required cables through the backplate:

·

The cable from the controller.

·

General Purpose Input / Output cable (Optional)

If wall tamper function is to be used then breakout ‘B’ must 
be removed and an appropriate wall screw fitted through 
the hole to actuate the tamper lever.

2

1

Mount the Backplate

Reader Connections

The S880 
reading HID  format card, with Graphic LCD and keypad. The 
reader can be set to use Wiegand or 

 is a 125kHz proximity card reader that is capable of 

®

20mA current loop 

communications.

For additional information regarding the installation, 
configuration and proper use of this product:
SMS User Guide, P/N 9600-0429, M2150 Access Control 
Design Guide, P/N 9600-0420, M2150 Intrusion Guide, P/N 
9600-0540 and M2150 UL1076 Compliance Manual, P/N 
9600-0449.

The securing screws ‘C’ are integral to the backplate and are unscrewed via the small holes in the 
enclosure so that the screw heads  locate in the counterbored holes on the inside of the 
enclosure.

You should find that 
the backplate has 
holes for connection 
to most standard 

electrical backboxes

.

C

A

B

Installation and User Instructions for S880 Readers

0V

RX+
RX-

TX+
TX-

12V

Controller

0V

TX+

TX-

RX+

RX-

+V

Reader

TB1

20mA current loop

0V

Green
Data 0

Red

Data 1

12V

Controller

0V

GRN

0

+V

Use Belden 
9537 Cable

Wiegand

RED

1

Reader

TB1

Connect shield at 
controller end 
only.

Connect shield 
at controller end 
only.

Twisted pairs (use 
Belden 9503 Cables)

Note:

 Use LK2 to select the communications mode (See Step 3).

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.
4). The Wiegand connections are not allowed under UL1076 unless a separate tamper switch is provided.

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