Smart Wireless Pool Thermometer: Monitor water temperatures effortlessly with a 328ft wireless range. Features a 3.54inch extra-large backlit screen displaying both pool and indoor temperatures accurately from -40℉ to 140℉ (-40℃ to 60℃). Enjoy the convenience of checking water temperatures from anywhere in your home, avoiding unnecessary trips outside IPX8 Waterproof with Buoy Design: Engineered for versatility, this thermometer is perfect for various water bodies including pools, hot tubs, fish tanks, and more. It boasts dual silicone seals and a tapered float design that ensures it never tips over. Powered by both solar and battery, it remains operational in all weather conditions Smart Alerts and 24-Hour Temperature Logging: Stay informed with instant alerts for abnormal temperatures. Features high/low temperature alarms and a timer to safeguard against extreme temperatures. Automatically logs daily maximum and minimum temperatures, and includes a 5-second backlight for clear readings at night Theory:Temperature Sensor (The product printed words may vary depending on the batch, but this does not affect use) Color: As Shown Material: ABS Package Contents: 1 x sensor 1 x display 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.