Note: Batteries are NOT included. Upgraded Version With Upgraded Features This second generation of Inkbird wireless thermometer set contains an upgraded pool thermometer and a temperature/humidity monitor. The pool thermometer is designed with quality material which ensures its good performance in the water. Place it in the swimming pool, and then you can check the measured temperature via the receiver inside your house thanks to the long wireless transmission distance. Higher Performance Than Ever Besides the data transmitted from the thermometer, you can monitor the temperature and humidity indoors on the receiver at the same time. Surprisingly, each receiver can connect 3 thermometers simultaneously and check data of 3 places at the same time. Obviously, it’s much more convenient and user-friendly than other products. Wide Application The suitable measurement temperature range of the thermometer is from -40℃～70℃ (-40℉～158℉), ensuring its wide application such as swimming pools, bathtubs, hot springs, fishponds, aquariums, and spa centers. Check the water temperature at any time to confirm no harm to your skin. Main Features: ➢ Wireless pool thermometer with a receiver monitoring temperature/humidity ➢ Up to 300 ft transmission distance in open ➢ ±1.0℃ (±1.8℉) high measurement accuracy ➢ IPX7 waterproof with quality material for long time use ➢ Clear LCD screen to check all values at a glance ➢ °C/°F selectable temperature unit ➢ Automatic/manual synchronization of temperature values ➢ Maximum/minimum temperature display ➢ Easy battery replacement ➢ One receiver supports up to 3 sensors connecting simultaneously Specifications: ● Brand: Inkbird ● Color: White ● Power Source: 4x AAA 1.5V Batteries (NOT included) ● Transmission Frequency: 433Mhz ● Transmission Distance: up to 300ft in open Receiver: ● Temperature Measurement Range: -10℃～60℃ (14℉～140℉) ● Temperature Measurement Accuracy: ±1.0℃ (±1.8℉) ● Temperature Display Accuracy: 0.1℃ (0.1℉) ● Humidity