Description: Solar powered, wireless connection, waterproof, LED green backlight display. 433MHZ wireless receives 3 channel's water temprature, Max/Min record of indoor and water temprature. Wide range for measuring temperature: Water temperature range: -40 to 60ºC, 58-140°F±2℉0.1℉, Indoor temperature range: 0 to 50ºC, -40-140°F±2℉0.1℉. Convertible temperature unit between °C/°F. Alarm with snooze function. Durability and water resistant design, widely use for Pool, Spa, bathtub and fishpond etc. Specification: Material: ABS Plastic Frequency: 433 Hz Maximum range of transmitter and receiver: 100 feet Calendar from Jan.1st 2000 to 31st.2099 Function: Alarm with snooze Measure Range: Water temperature range: -40 to 60ºC, 58-140°F±2℉0.1℉ Indoor temperature range: 0 to 50ºC, -40-140°F±2℉0.1℉. Display Console: 2 x AAA 1.5 V batteries (not included ) Remote Sensor: 2 x AA 1.5 V batteries (not included ) Size: approx. Display size: 12x7.5x2.5cm/ 4.72x2.95x0.98inch Sensor size: 14.5x8.5x2 cm/ 5.7x3.34x0.78inch Package Includes: 1 Set Pool Spa Thermometer