Crandall Stats & Sensors 20-881-CSS Thermostat Calibration Wrench

The Crandall Stats & Sensors 20-881-CSS Thermostat Calibration Wrench is designed for adjusting and calibrating compatible mechanical and pneumatic thermostats. It provides a precise fit for calibration and cover screws, allowing to make proper adjustments without damaging control components. Frequently used during installation, maintenance, and system servicing, the wrench assists in restoring correct thermostat settings for dependable temperature control. It is an essential part for commercial applications, where HVAC systems require properly calibrated thermostats to maintain proper control response, stable operation, and consistent heating or cooling performance.