Faster Response:This second generation of the INKBIRD wireless pool thermometer is designed with a contact type probe, making it detects water temperature quickly and accurately.Higher Performance: The IBS-P01R features a higher level of water resistance and is made of quality material, preventing the LCD screen from getting misty while using. You can check all data clearly this time. Easier Connection:With the one-way connection, an upgraded technique, it's much easier to connect the thermometer with the receiver wirelessly and transmit data at a distance of up to 300 ft. Multiple Connection:One receiver is capable of connecting 3 pool thermometers simultaneously, making it a great helper to monitor the temperature of various places at one time.Wide Application:This thermometer set is ideal for both indoor and outdoor use. You can use the thermometer in a place within a temperature range from -40 to 70 (-40-158), such as swimming pool, bathtub, hot spring, fishpond, and aquarium. Main Features:°C/°Fselectable temperature unitAutomatic/manual synchronization of temperature valuesMaximum/minimum temperature displayEasy battery replacementOne receiver supports up to 3 sensors connecting simultaneouslySpecifications:Color: WhitePower Source: 4x AAA 1.5V Batteries (NOT included)Transmission Frequency: 433MhzTransmission Distance: up to 300ft in openReceiver:Temperature Measurement Range: -10-60 (14-140)Temperature Measurement Accuracy: ±1.0 (±1.8)Temperature Display Accuracy: 0.1 (0.1)Humidity Measurement Range: 0-99%Humidity Measurement Accuracy: ±5%Humidity Display Accuracy: 1%Wireless Pool Thermometer:Temperature Measurement Range: -40-70 (-40-158)Temperature Measurement Accuracy: ±1.0 (±1.8)Temperature Display Accuracy: 0.1 (0.1)Temperature Sampling Period: 10 secondsWaterproof Level: IPX7Package contents:1x Pool Therm