TEMP SWITCH Standard is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product In design, we specify custom wax formulations that will expand when heated, activate a snap action electrical contact and transfer the electrical signal to the fan controller In manufacture, we custom form the wax pellets for different temperature range specifications. All units are calibrated tested to confirm switch actuation at their specified temperature The switch is designed using a formed bimetallic contact arm. The bimetal contact movement is achieved using the different expansion rates of two metals fused together. This is a creep action device, provides precise performance