WDF25-Ltypesaginomiya thermostat use for freezer,fridge,refrigerator,ice chest,fresh cabinets. Operation principie:Temperature-sensitive media is charged into power element,when sensing part(capillary) fell the change of outside temperature, relevant pressure change will happen inside power element. So bellows will swallow or reduce. Displacement is enlared by lever to activate switch. So automatic control of temperature can be reached. Rotat shoft on mounting plate is used to set up contyol temperature.whether the above product can meet your request? if can ,it's my honor, if can't, you can give me your picture, technical data or drawing.we can offter individualized design for you.We are professional manufacturer of all kinds of thermostat, 10 yearsexperience in thermostat industry.the transportation around our company is very convenient.More details with the thermostat, please contact with us.