2 zone OpenTherm wiring centre has two inputs for 2 OpenTherm thermostats, it also has 2 relay outputs for valves and one OpenTherm output for an OpenTherm boiler or heat pump.

The 2 Zone OT wiring Centre uses a double-loop PID temperature controller to operate 2 zones individually.

It Also includes a TPI algorithm, which is used for updating a boiler or heat pump setpoint under low-load conditions to maintain your comfort levels, avoid overshoots and undershoots and save energy.