Wireless Pool Thermometer: The maximum wireless connection range of the floating pool thermometer is 328ft, with a temperature error range within ±1°C. 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 the pool sensor: -40~70°C/-40~158°F. Indoor receiver temperature measurement range: -10~60°C/14~140°F. Digital Pool Thermometer: The floating pool thermometer is equipped with a sensitive contact probe for fast and accurate water temperature detection. The swimming pool thermometer features a clear LCD display that shows 12/24-hour time format. Switch between Celsius and Fahrenheit using the "C/F" button. The wireless pool thermometer provides accurate readings in both units 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 the included lanyard helps prevent loss and allows for easy retrieval. High-Level Waterproof: This pool temperature thermometer features an IP67 rating with a double-sealed waterproof 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 cover, dry it thoroughly, and reassemble before use. Multiple Purposes: The floating wireless pool thermometer has a compact and sleek design with versatile functionality, ideal for use in swimming pools, hot tubs, aquariums, 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 User manual