LCD Digital Wireless Thermometer Wireless transmission function, you can know outdoor temperature with indoor receiver The appearance is more beautiful, and a variety of color shells are available Celsius and Fahrenheit can be converted freely Good waterproof effect Especially suitable for aquarium water temperature measurement. Specification: material: plastic Product size: Display size: length 58mm/2.36inch width 36mm/1.42inch thickness 11mm/0.43inch probe part line length: about 90cm/35.43inch Resolution: +-0.1 C Accuracy: +-1 C Temperature range: -50 C - +60 C Ambient temperature: -10C-+50C Use battery: button battery 1.5V Instructions for use: 1. Fix the display part outside the fish tank (the display can't touch the water) and extend the induction probe into the water. 2. Press the power button to start displaying the temperature. If you need to turn off the power, press and hold the power button for 3 seconds. 3. The display shows HC indicating that the measured temperature is higher than 70 C, and the display shows LC indicating that the measured temperature is lower than -50 C. Package Includes: 1 Piece Waterproof electronic thermometer with probe Note: Tracks can disassemble freely Supported wheel: TW-09