Title Pool Thermometer, Wireless Pool Thermometer Floating Easy Read, Pool Thermometer for Swimming Pool Hot Tubs Pond Test Kits & Thermometers LCD Screen 360 Degree Visibility White Not included Batteries Features: Wireless Pool Thermometer: The maximum connection distance is 300 feet90M). You can check temperature readings with the receiver inside home. Accurate Reading: Support both Fahrenheit and Celsius readings.Update temperature data every 3 minutes. Premium Quality: The thermometer has adopted high quality materials, it is solid and durable. IPX7 Waterproof: The thermometer is ideal for swimming pools, Fish Ponds, aquariums, baby baths, spas, etc. Pool thermometer floating easy read, measurement range: -40~158(-40~70). Easy To Read: The top hemispherical transparent protective shell and LCD vertical structure make it easier to read temperature on water. NOTE: To prevent water ingress, please tighten the cover when finished installing the 2PCS AAA batteries(battery not included) . Specification: Battery : 2 * AAA 1.5V ( Temperature and humidity monitor ) , 2 * AA 1.5V ( Wireless Remote Sensor ) 433Mhz Transmission Frequency Transmission Distance: up to 300 ft(90m) in open space, if thereis interference. the transmission distance will be limited Wireless Remote Sensor Supports Up to Three Channelsand Waterproof Function (IPX7) Temperature and Humidity Monitor Temperature Measurement Range: 0C-90C (-32F-199) Temperature Measurement Accuracy: 1C (+1.8) Temperature Display Accuracy: 0.1C (0.1) Humidity Measurement Range: 10%-99% Humidity Measurement Accuracy : 5% Humidity Display Accuracy: 1% Wireless Remote Sensor Temperature Measurement Range: 0C-90C (-32-199) Wireless Remote Sensor Temperature Measurement Accuracy: 1C (+18) Wireless Remote Sensor Temperature Display Accuracy: 0.1C (0. 1) Temperature Sampling Period: 3min Packaging Size: 24 * 12 * 12cm / 9.45 * 4.72 * 4.72in Product Weight: 400g / 14.11oz Gross Weight: 500g / 17.63oz Packaging List: 1 * Swimming Pool Thermometer 1 * Temperature Display Screen Battery does not include