[Wireless Pool Thermometer] The maximum wireless connection range of the floating pool thermometer is 328ft, and the temperature error range is within 1, The outdoor pool thermometer can be wirelessly connected to indoor receiver, allowing you to use the receiver to check temperature data without leaving the room. [Digital Pool Thermometer] The pool thermometer floating is equipped with a sensitive contact probe, which can quickly and accurately detect water temperature, The swimming pool thermometer has a clear LCD display screen, which can display 12/24 hours of time. [Helpful Accessory] The digital pool thermometer is packaged with a rope. The wireless pool thermometer float around with the water, so tying to the thermometer allow you to find the pool thermometer quickly and not lose it. [High-Level IPX8 Waterproof] This pool temperature thermometer features an advanced IPX8 with a double-sealed waterproof cover. Before placing the pool thermometer digital in the water, please tighten the thermometer cover, otherwise water may enter. If you find water mist on the screen of the floating pool thermometer lid, please unscrew the lid to dry and then use it. Colour:White & Gray Material:Plastic Package Contents: 2 * Host unit 2 * Pool temperature outdoor unit 2 * Outdoor unit swimming pool lanyard Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.