Features 1、MEASURING RANGE: The thermometer has an internal temperature range of -5-50℃ (23-122℉) and an external temperature range of -50-70℃ (-58-158℉), with high accuracy. 2、APPLICABLE SCENE: Using bracket and hook for suspension, widely used in household fridges, restaurants, supermarkets, pharmacies, fish tanks, aquariums, etc. 3、LCD DIGITAL SCREEN: This thermometer adopts a large digital LCD screen display, clear and intuitive, with ℃ and ℉ conversion switch, convenient and practical. 4、EXTERNAL SENSOR: Equipped with a waterproof external sensor, with a wire length of 3 meters, suitable for long distance temperature measurement work. 5、OTHER FUNCTIONS: The digital fridge thermometer has built in alarm, maximum and minimum value recording and reset functions to meet different needs. Specification Item Type: Thermometer Model: TM805 Material: ABS Power Supply: 1 x LR44 1.5V Battery (not included) Purpose: Temperature testing Internal Temperature: -5-50℃, ±1℃; 23-122℉, ±1.8℉ External Temperature: -50-70℃, ±1℃; -58-158℉, ±1.8℉ Maximum Minimum Value: Yes Temperature Upper Lower Limit Setting Alarm: Yes ℃ and ℉ Conversion: Yes Sampling Rate: 1 Time Per 2 Seconds Long Distance Measurement: External sensor, wire length of 3 meters (detachable) Screen Size: Approx. 42 x 27mm / 1.7 x 1.1in Package List 1 x Thermometer 1 x Plastic Mounting Plate 1 x Sensor 1 x Double Side Sticker