Inter control adjustable thermostats nc 16a 230v inter control 143211249d01 this adjustable thermostat uses a bimetallic strip to detect increases in temperature the contact opens when preset temperature is reached and closes when temperature has dropped by the differential suitable for use in fan heaters convectors frost protection appliances bathroom heaters and radiators inter control 143211249d01 43c 16a 230vac nc adjustable thermostat