FM Approved Boiler High Limit Switch Probe Range: 0 to 700°C (32 to 999°F) for thermocouple J type. 0 to 999°C (32 to 999°F) for thermocouples K or S type. Input: Type J or K thermocouple. Output: 16A SPDT relay @ 250 VAC resistive. Horsepower Rating (HP): 1 HP.

The Series TSF Thermocouple FM Approved Limit Control provides audible alarm status along with a robust 16 amp relay output. Unit allows the user to easily select automatic or manual reset along with 10 other parameters. The TSF series has a built in reset button on the front panel or can accept an external reset.