Danfoss FP735SI Electronic 3 Channel Programmer 087N789000.

The Danfoss programmer has three channels and outputs for controlling on and off periods for room heating and hot water. Each output channel can function independently of the others, with its own timing. It is fully Part L compliant, and it provides a single-unit solution for controlling a hot water zone as well as two separate room heating zones. Each day, the FP735Si can perform up to six on-to-off or off-to-on changes.