ITEM NAME:Wireless Digital Pool SPA Pond Tank Hot Tub Floating Sensor Thermometer Description: Wireless indoor and outdoor temperature, made simple. Simply insert batteries in the base and remote unit, and install the sensor in the pool or spa. The pool and spa temperature is transmitted to the display console inside. The display is simple and easy to read. SNOOZE FUNCTION:The alarm clock with snooze function 433 MHZ WIRELESS:433 MHZ wireless receive 3 channels water temperature Perfect for ponds, tanks, and any other fluid based water applications. Specification: Material: Plastic Size: Approx. 13.5x 10.3x 17cm/ 5.31x 4.06x 6.69inch Calendar: from January 1, 2000 to January 31, 2099 Water temperature range: - 40 ~ 60 degrees Indoor temperature range: 0 ~ 50 degrees Range of visibility Wireless transmission line (outdoors):100 meters Frequency: 433 MHZ Update rate: 90 seconds on the remote control and display control bench for 10 seconds Accuracy of measuring range resolution indoor temperature: - 40~ 140 Â ° F Water temperature: - 58 ~140 Â ° F Power display console: 2 x AAA 1.5 V alkaline battery (not including) Remote sensors: 2 x AA 1.5 V alkaline battery (not including) Package Includes: 1 x Spa Thermometer 1 x Wireless Transmitter 1 x User Manual Note: The color may have different as the difference display, pls understand. Please allow 1-3mm error due to hand test. SKU: DMO0020064619533448.Simply insert batteries in the base and remote unit, and install the sensor in the pool or spa. The pool and spa temperature is transmitted to the display console inside. 433 MHZ WIRELESS:433 MHZ wireless receive 3 channels water temperature.