When you're troubleshooting a no-cool call

Durable construction optimized for high-pressure HVAC applications and volatile temperature fluctuations

Can I install this without removing the thermostat from the wall

Using it with non-compatible hardware may result in erratic behavior or failed resets

always verify your specific model number

Schneider Electric (Barber Colman) TC-1101 Thermostat 30067439-890 When you're troubleshooting a no-coolThe Schneider Electric (Barber Colman) TC 1101 is a commercial grade two position electric room thermostat engineered for high accuracy on off control of HVAC equipment, including fan coils, motor starters, and contactors. Designed for versatility, this SPDT snap action switch supports both low and line voltage thermostat applications (24 to 277 VAC), making it a standard choice for building automation and industrial climate control. With a setpoint