NOTE:PAC-US444CN-1 is compatible with Mitsubishi CITY-MULTI (Models after April 2012), M-Series and P-Series Indoor Units. Compatible with PAC-SE41TS Remote Temperature sensor & MAC-331F but M-Net & MA Control are not supported, and you will need 12 VDC power supply for MAC-33IF. Only 1 third party thermostat connects to 1 thermostat interface to control only one indoor unit even for MXZ multi-zone system. Compatible with almost all current indoor units offered by Mitsubishi Electric US. Preferred Terminals: R, C, G, W1, W2, Y1, Y2. Works with conventional systems, NOT heat pump control. Any system that can be controlled by the MHK1 controller model, can now be controlled by a third-party HVAC thermostat or input/output controller. The Thermostat Interface allows HVAC thermostats and input/output controllers to control either residential or commercial indoor units through its CN105 connector. It provides 3 input terminals to control fan Speed: Auto, Medium, High, and custom auto.

PAC-US444CN-1 thermostat interface enables the use of a third-party thermostat to control your Mitsubishi Electric indoor units.

Mitsubishi programmable thermostat