NEEWER is a registered trademark. ONLY Authorized seller of NEEWER can sell under NEEWER listings. Features: With a stand on the back of the unit also has a magnet for hanging and standing purpose Waterproof exterior sensor with 3 meter cable which is thin and long to easily get through window sealing. It also has a sensor holder and a double-faced sticker which can fix the external sensor. It"s sitable for measuring the temperatures inside of fridges, freezers or medicine cabinets. Specifications: Temperature (Out sensor) Range: -50~70?C/ -58?F~158?F Accuracy: ?1?C/ ?1.8?F Resolution: 0.1?C (Room temperature) Range: -10~50?C / 14?F~122?F Accuracy:?1?C/ ?1.8?F Resolution: 0.2 ?F Temperature alarm function MAX/MIN ?C/?F display Meter Size: 50(L)*75(W)*24(D)mm Cable length: 3 meters LCD size: 20(L)*47(W)mm battery: 1.5V (AAA) (Not included) Package contents: TM803 Fridge Refrigerator Freezer Digital Alarm Thermometer Temperature Meter manual