Using this oven thermostat is easy. First, make sure your oven is turned off and unplugged. Then, locate the old thermostat and carefully remove it. Next, install the new thermostat by aligning the mounting holes and connecting the wires to the spade terminals. Once everything is connected, plug in your oven and turn it on. When using the thermostat, avoid exposing it to extreme temperatures outside the 50 - 285 degrees Celsius range. Also, don't pull on the capillary tube or bulb as it may damage the thermostat. For maintenance, keep the thermostat clean by wiping it with a dry cloth. If you notice any issues like inaccurate temperature readings or problems with the contacts, it's best to consult a professional.