This 8 channel WIFI wireless central control units ( 8 No of output for any type of actuator ) connect with HY603 thermostat .

For ease of operation, you can set room temperature through Following phone application or by voice over (Amazon Alexa,) “One room thermostat can control multiple underfloor heating loops”.

Room heating app.

Smart RM app.
Smart Life app.
Tuya Smart app.

The Central control have one switch relay for Pump and one for Boiler (Dry Contact)

There are DIP switches which we can adjust the working time for the delay, according to product indication position adjustment