Ranco 016 thermostats are for room and commercial refrigeration, equipped with a unipolar SPDT switch that opens or closes when the temperature increases or decreases. The tripping temperature can be adjusted by means of a screw on all versions, while the differential is adjustable on some models only. Thermostats can also be equipped with a sensor to measure the air temperature, with straight capillary, with spiral capillary and remote bulb.

Straight and coiled capillary Thermostats are used on applications where it can be guaranteed that the sensing element used sensors along the entries length of the capillary. Where local sensing is required the coiled end version is used. The straight capillary is used on applications such as sensing the temperature over the length of the evaporator coil. The only difference between the straight and coiled capillary thermostats is the coiling of the last few centimetres of the sensing element.