Whether you are dealing with carbon buildup or a cracked insulator

Rated for 400VAC and 50/60Hz

Precision Calibration: Factory-set at 325°F M/R for accurate thermal protection and failure prevention

Though rated for up to 250V

How do I calibrate the set point on the 8021204063

Maxitrol TD121 Temperature Selector 30067439-890 Whether you are dealing withThe Maxitrol TD121 Temperature Selector is a critical control component designed for Selectra Series 21 and 31 electronic gas modulation systems. Specifically engineered for make up air heating and indirect fired units with atmospheric burners, this remote selector provides precise setpoint management within a 55 90 degrees F range. Unlike standard thermostats, the TD121 functions as a remote setpoint adjuster, communicating directly with the A1010 or