... .Technical DataSwitch temperature difference: 7k(±4k tolerance) Sensor element: thermostatic bimetal Contact type: snap-action contact Contact resistance : <10mΩ Service life ... °C(-49 to 1760 F protection type: IP20 thermostat,dual thermometer,stego thermostat,thermal controller, temperature controller,bimetal thermostat,Thermostat KT 011