Model No.: WPF-20 Power: 110V-250V 6A. Probe length (approx): 80 cm. Adjustable temperature range: -3°C to -20°C Terminals: 3 pins Size (approx.): 61 x 61 x 22 mml*w*h Net weight: 75 g Contents: 1 x refrigerator thermostat. Notice: 1. After you get the thermostat, if you find it does not exactly match your machine and it is difficult to install, don't worry, you can make a slight modification on it and it will work, like modifications on mounting brackets, electrical terminal connectors. screw hole and so on. 2. The temperature range of this thermometer can accommodate a refrigerator or freezer! A small screw on the back can adjust the range to either by adjusting it, after getting the right temperature, the screws should be fixed with wire glue to prevent them from loosening. But we suggest you do not adjust this screw, the temperature control knob is your first choice to use! 3. If the adjusted temperature is incompatible with your own dial, you can create your own indicator with a feather, which is convenient for your daily use!