Features1Multifunctional thermometer: The pool thermometer can be configured with temperature alarm and snooze alarm, display temperature, day of the month, day of the week, time and receiving channel. 23 receiving channels: The floating thermometer can receive 3 channels at a distance of 433 MHz / 328.1 ft, and can receive water temperature from up to 3 locations, which is convenient and practical. 3LCD display: The digital LCD display can clearly display data such as temperature and time for easy recording. The water temperature range is 40 to 60 degrees; the indoor temperature range is 0 to 50 degrees. 4Wireless raincoat: SPA thermometers have no cable restrictions and can be placed at will. The thermometer is waterproof and can float in the water to detect the temperature of the swimming pool. 5Widely used: wireless pool thermometers can be used not only for swimming pools, spas, ponds and hot tubs, but also for monitoring indoor and outdoor temperatures.SpecificationMaterial: PlasticFrequency: 433 HzMaximum transmitter and receiver range: 328.1 feetIndoor temperature range: 0 to 50 degrees CelsiusOutdoor temperature range: -40 to 60 degrees CelsiusTemperature detection reaction time: 48 sTransmitter battery: 2 x AA (not included)Receiver battery: 2 x AAA (not included)Transmitter size: 3.3 x 6.2 inchesReceiver size: 4.7 x 3.0 x 0.9 inches (length x width x height)Receiver screen size: 2.4 x 1.8 inches (length x width)Net weight: 9.88 ouncesPackage List1*Wireless Pool Thermometer 1*Monitor