Installation guide

VAR4 / VAR12 / VAR20 - Product Description
Pin No. Signal Description
1 CONTACT-1 Analogue Contact 1, internally pulled up to 5 V
2 CONTACT-3 Analogue Contact 3, internally pulled up to 5 V
3 CONTACT-5 Analogue Contact 5, internally pulled up to 5 V
4 CONTACT-7 Analogue Contact 7, internally pulled up to 5 V
5 CONTACT-9 Analogue Contact 9, internally pulled up to 5 V
6 0V 0V
7 ALL-CALL-2 (FIRE MIC-2 PTT) Input 2 Fire Microphone All-Call PTT
8 ALL-CALL-1 (FIRE MIC-1 PTT) Input 1 Fire Microphone All-Call PTT
9 N/C Fault Relay N/C Contact
10 COM Fault Relay Common Contact
11 ALL-CALL-ONLY LED-1 Input 1 Fire Microphone All-Call-Only LED
12 ALL-CALL-ONLY LED-2 Input 2 Fire Microphone All-Call-Only LED
13 REMOTE FAULT-1 Remote Fault Output 1 (open collector)
14 CONTACT-2 Analogue Contact 2, internally pulled up to 5 V
15 CONTACT-4 Analogue Contact 4, internally pulled up to 5 V
16 CONTACT-6 Analogue Contact 6, internally pulled up to 5 V
17 CONTACT-8 Analogue Contact 8, internally pulled up to 5 V
18 CONTACT-10 Analogue Contact 10, internally pulled up to 5 V
19 AUX POWER Auxiliary Power Supply (18-36 V DC, fused at 100 mA)
20 MONITORED FAULT RELAY Monitored Fault Relay Contact
21 MONITORED FAULT RELAY Monitored Fault Relay Contact
22 N/O Fault Relay N/O Contact
23 SPEAK-NOW LED-1 Input 1 Fire Microphone Speak Now LED
24 REMOTE FAULT-2 Remote Fault Output 2 (open collector)
25 SPEAK-NOW LED-2 Input 2 Fire Microphone All-Call-Only LED
Issue: 03 complete, approved
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