This power Supply is used with Opal Kit 650DD,128DD & RC-11.
In one hand is connected to line voltage 230V on the other hand give 12 V to the Motor Damper . on the other side is RJ-11 socket for RJ-11 cable to the receiver or to the Thermostat. it comes in 3 Versions C-315 to operate 1 motor Damper , C-3152 to operate 2 motor Damper. C-3154 to operate 4 motor Damper (4 rooms)