[Wireless Pool Thermometer] The maximum wireless connection range of the floating pool thermometer is 328ft, and the temperature error range is within 1C. The outdoor pool thermometer can be wirelessly connected to an indoor receiver, allowing you to check temperature data from inside the room. Temperature measurement range of pool sensor: -40~70C/-40~158F. Indoor receiver temperature measurement range: -10~60C/14~140F. [Digital Pool Thermometer] The floating pool thermometer is equipped with a sensitive contact probe for quick and accurate water temperature detection. The swimming pool thermometer features a clear LCD display that shows 12/24-hour time format. You can select the desired temperature unit using the "C/F" button. The wireless pool thermometer provides accurate readings in both Fahrenheit and Celsius and supports MAX and MIN temperature recording. [Helpful Accessory] The digital pool thermometer comes packaged with a rope. The wireless pool thermometer floats on water, and attaching the rope helps you locate it easily and prevents loss. [High-Level Waterproof] This pool temperature thermometer features advanced IP67 waterproof protection with a double-sealed cover. Before placing the digital pool thermometer in water, ensure the cover is tightly secured to prevent water ingress. If moisture appears on the screen, remove the lid, dry it thoroughly, and then reuse. [Multiple Purposes] The floating wireless pool thermometer has a compact and sleek design with rich functionality, making it suitable for use in swimming pools, hot tubs, aquariums, baby bathrooms, and spas. Color: White & Gray Material: ABS Package Contents: 1 x Mainframe (without 2X AAA battery) 1 x Outdoor pool temperature sensor (without 2X AAA battery) 1 x Outdoor unit pool lanyard 1 x English manual Only the items listed above are included; other products are not included. Note: Light reflection and differences in display screens may cause slight variations in the color of the item compared to the picture. Measurement error allowance is +/- 1-3cm.