Resideo ERM5220R1018 Equipment Remote Module | PartsHnC
The Resideo ERM5220R1018 is a wireless communication bridge designed to make HVAC system installs easier. This small module, measuring 6-78" x 6-39/64" x 1-31/64", uses a conventional 24 VAC power source and can endure humidity levels of up to 99%. Essentially, it eliminates the need to run extra cables between your thermostat and HVAC equipment such as a compressor or boiler.