Watts BT-HCM02 RF Mode D'emploi page 4

4. WIRING ASSEMBLY
Power Supply
230Vac 50Hz
HC input
Open Heating system
Close  Cooling system
Or Water Probe
Security
Mandatory to
command the live
Live contact
contact (pump)
(Pump)
4
Humidity drier
Free contact
RF antenna
connection
Key (for RF
initialisation)