Enforcer: Installation Manual 
Page: 9 
3.7 Input / Output Board 
The Input/output (I/O) board contains the RS485 terminals that are used to connect additional wired 
keypads, readers, input expanders and output expanders . 
Terminals: 
D1-: RS485  0V  
D2+: RS485 +12V 
D3: RS485 'A' Bus 
D4: RS485 'B' Bus 
PGM1: Programmable Output 
BELL: Bell output for a wired external 
sounder 
STRB: Strobe output for a wired external 
sounder 
Z33: Wired Input 33 
COM: Common terminal for Z33 and Z34 
+12V: +12V auxiliary supply 
Z34: Wired Input 34 
 
The maximum devices the I/O board can have on the RS485 bus are as follows: 
4 x Input Expanders: EURO-ZEM8, EURO-ZEM8+, EURO-ZEM8+PSU or ZEM32-WE 
1 x Output Expander: EURO-OEM8R8T or EURO-OEM16R+PSU 
3 x Keypads/Readers (same bus): EURO-LCDPZ, EUR-107 or EUR-108 
3.8 Connecting Peripherals to the I/O Board 
Connecting Keypads (EURO-LCDPZ) 
 
Up to 3 additional keypads can be connected to the  Enforcer. These will be addressed 
individually and also addressed in the Engineer function '‘Assign Keypads / Readers’.  
Addressing at the keypad 
Each keypad will also need to be addressed individually, press and hold the D key until 
‘SECURITY CODE’ is displayed. Enter ‘2000’ and select the desired address (the first keypad that 
is connected should be addressed as ‘1’). Press the a key to save the data and exit.