Clear-Com HX System Frames - Manual (Page 31)

DB-25M Connector
Pin Description Relay
Pin 1 Common
RELAY1
Pin 2 Normally closed
Pin 3 Normally open
Pin 4 Common
RELAY2
Pin 5 Normally closed
Pin 6 Normally open
Pin 7 Common
RELAY3
Pin 8 Normally closed
Pin 9 Normally open
Pin 10 Common
RELAY4
Pin 11 Normally closed
Pin 12 Normally open
Pin 13 Digital ground -
Pin 14 Common
RELAY5
Pin 15 Normally closed
Pin 16 Normally open
Pin 17 Common
RELAY6
Pin 18 Normally closed
Pin 19 Normally open
31 Eclipse HX-PiCo User Guide