Relay Trigger for Hot Water System

[swalton]

any kincony controller can use , your relay is DC load. you can chose relay board or mosfet board. all can work with your relay.

Thanks! Do you have a recommendation for relay controller I could use? 

I require: 

• 4-8 outputs 
  

and a nice have would be the option to turn on and off the relay manually.

Thanks 
Sam