BD923 Our Big Digit Thermometer has 3 in. high numbers on a super large 5.5 X 9.5 in. screen. Built into a rugged aluminum housing, the large illuminated red numbers are very bright and can be seen from great distances - easily visible from 50 to 75 feet. This thermometer comes with an attached immersion waterproof probe that has a long 18ft cord with a probe tip length of 1 in. Accuracy is +/- 2 Degrees. Can be custom calibrated for higher accuracy over a limited range. High and Low alarms may also be set. The BD923 Big Digit Thermometer is the perfect thermometer to measure liquid or air temperatures where visibility from a distance is required. This thermometer has an easy-to-read, bright display, visible from 75 feet or more. With precision accuracy of +/- 2 degrees F or +/-1 degree Celsius, the BD923 is perfect for any monitoring job. The increased visibility of the BD923 thermometer makes it a perfect choice for applications such as beverage coolers, hot tubs, labs, ice baths, water storage containers, food preparation hot/cold tables, hydroponics, oil and gas temperature monitoring, and any other application where increased visibility from a distance is needed. Please note that while the sensor is waterproof, the display unit is not, so it must be protected from getting wet. Additionally, as bright as it is, it will not be as visible if the display is in direct sunlight. Specifications Display Height: 3" Power: Standard USB power port. USB adapter is included. High and Low Alarms Visibility: Up to 75 Feet Probe cable length: 18' Temperature Range: -40ºF to 248ºF, -40ºC to 120ºC Temperature Accuracy +/- 2º F User calibration range: +/- 20ºC Case dimensions: 9.7"L x 5.36"H x 0.95"D Case is aluminum with a glass lens. F/C selectable Applications The BD923 is versatile and has been a powerful asset in many applications including Anywhere you need an accurate & highly visible thermometer. Bakeries Beer and Beverage Storage Areas Computer and Server Rooms Construction Correctional Facilities Dairies Food Pantries Hatcheries Home Logistics Painting Pet Food Manufacturers Product Packaging Pubs and Bars Refrigerated Freight Refrigeration Seafood Shops Snow Melters Spas Supermarkets Swimming Pools Warehouses Wood Drying Manual Download the manual for the BD963 here.