Model	Voltage	Frequency (Hz)	Load	Endurance Cycles	Max switch head Ambient(°C)	Setpoint range (°C)
	(Vac)
Series I	120	50/60	16FLA/ 80LRA(NC)	6,000	65	-35 ~ 320
	277		8FLA/ 40LRA(NC)
	120		8FLA/ 48LRA(NO)
	277		5.1FLA/ 30.6LRA(NO)

    .Model I Series provided with W, R and B terminals.  W is for supply connection.  R and W is NC, B and W is NO. 
.There is no “OFF” position with this thermostat. 
.The rotary knob adjusts the set point temperature from a minimum to maximum temperature. 
.These thermostats are intended to function during the normal operation of the end-use appliance. 
.The contacts of these devices open on temperature rise.  Medium used is kerosene.