Place the host indoors to view data such as time, temperature, and humidity. The transmitter is placed in an outdoor pool to obtain data and then transmitted to the host. The sending distance of outdoor sensors is 60 meters. Upgrade and optimize the waterproof and sealing properties to ensure that the product will not leak or cause any adverse issues. Time display: 12/24H optional It can display the real-time temperature of the water area where the sensor is located and the indoor real-time temperature of the host on the same screen. Supports recording of the highest and lowest temperatures of the day. Indoor and outdoor temperature display: / optional. Indoor host temperature detection range: -9.9 ~+50 (14.2 ~122 ). The temperature detection range of the water tank sensor is -40 ~+70 (-40 ~158 ). The temperature error is within 1 , and the transmission distance is 60 meters. Power supply: Indoor host: 2x1.5V "AAA" Alkaline battery (not included in shipment) Outdoor sensor: 2x1.5V "AAA" Alkaline battery (not included in shipment) Specification Introduction (1) Packaging size: 14.5 * 9.5 * 9.5 cm (2) Packaging weight: 290g (3) Regular packaging list: 1 * Host, 1 * Swimming pool temperature outdoor unit, 1 * Outdoor unit Swimming pool hanging rope, 1 * Instructions in five languages