Teknic offers Capillary Tube Thermostat with 16 A Switching Capacities. Teknic is an ISO 9001: 2000 certified company. The Capillary Tube Thermostat with 16 A Switching Capacities is weather-proof capillary tube thermostat that is a mechanical change-over controller housed in a polyester enclosure. Heaters, fans, motors and other equipment are energized and de-energized when temperatures fall below or rise above certain limits. The Capillary Tube Thermostat with 16 A Switching Capacities can also be used to control the temperature in air, liquids and on various surfaces.