Mitsubishi PAC-US444CN-1 – Thermostat Adapter Interface


Price: $218.99
(as of Nov 22,2024 00:55:49 UTC – Details)



PAC-US444CN-1 thermostat interface enables the use of a third-party thermostat to control your Mitsubishi Electric indoor units. It provides 3 input terminals to control fan Speed: Auto, Medium, High, and custom auto. The Thermostat Interface allows HVAC thermostats and input/output controllers to control either residential or commercial indoor units through its CN105 connector. 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.
Works with conventional systems, NOT heat pump control. Minimum Terminals: R, C, G, W1, Y1. Preferred Terminals: R, C, G, W1, W2, Y1, Y2. Line Voltage Thermostats will not work. Compatible with almost all current indoor units offered by Mitsubishi Electric US. Only 1 third party thermostat connects to 1 thermostat interface to control only one indoor unit even for MXZ multi-zone system. 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.
NOTE:PAC-US444CN-1 is compatible with Mitsubishi CITY-MULTI (Models after April 2012), M-Series and P-Series Indoor Units. Tested with Nest, Honeywell, Lyric, and INNCOM (with fan speed control) thermostats.
Supported thermostats include: Nest, Honeywell, Lyric, INNCOM with fan speed control
One Thermostat Interface per indoor unit
Provides 3 input terminals to control fan speed control: High, Medium, and Low
Enables use of Mitsubishi Electric Indoor units to Enjoy Third Party Thermostat Features & Benefits
Compatible with Mitsubishi CITY-MULTI (After April 2012), P-Series & M-Series Indoor Units


The Mitsubishi PAC-US444CN-1 Thermostat Adapter Interface is an essential component for integrating a third-party thermostat with your Mitsubishi Electric HVAC system. This adapter allows you to connect a standard thermostat to your Mitsubishi system, giving you greater control over your heating and cooling settings.

With the PAC-US444CN-1, you can easily adjust the temperature, fan speed, and mode settings on your Mitsubishi system using a compatible thermostat. This adapter interface is designed to work seamlessly with Mitsubishi Electric systems, ensuring reliable performance and compatibility.

If you’re looking to upgrade your thermostat and take control of your indoor climate, the Mitsubishi PAC-US444CN-1 Thermostat Adapter Interface is a must-have accessory. Say goodbye to manual adjustments and hello to smart, convenient temperature control with this innovative device.
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