TMS-701 Thermostat Is:
Type: Mechanical room thermostat
Control: On/Off temperature control
Technology: Bimetallic strip or capillary sensing
Function: Switches heating or cooling equipment based on room temperature
Typical Use: HVAC systems, fan coil control, basic comfort thermostats
Unlike digital thermostats, the TMS-701 uses a mechanical sensing element (bimetal or capillary tube) to detect ambient temperature and close/open electrical contacts at a set temperature.
Most basic mechanical thermostats like the TMS-701 have a few simple terminals:
| Terminal | Function |
|---|---|
| COM | Common input |
| NO | Normally Open contact (closes when calling for cool/heat) |
| NC | Normally Closed contact (opens when calling for cool/heat) |
| Ground (if present) | Safety ground |
