A. Built-in rechargeable battery: It can be powered by an external DC 5V power supply or a spare battery. (Note: If you want to power the detector with a battery, please open the back cover and turn on the detector.) B. Temperature unit (Celsius or Fahrenheit): You can view the temperature history at any time. C. Multi - user support: You can click to share the device with other users. D. Built-in buzzer: When the detector is triggered, the buzzer will sound. E. Application: You can search for "Tuya Smart" or "Smart Life" to download it, which supports Android and Apple smartphones. F. Note: The Kanglian (KONLEN) temperature sensor is equipped with a 1 - meter cable and can be used for indoor and outdoor detection. However, the digital display main panel is not waterproof and must be placed indoors. G. Model: -951T H. Platform: Tuya I. Display method: LED digital display J. Detection object: Temperature K. Power supply method: External DC 5V 1A power adapter L. Rechargeable battery: 3.7V 600MA M. Battery standby time: Approximately 6 hours N. Temperature detection range: -40 to +120 degrees Celsius O. WIFI frequency band: 2.4G, does not support 5G P. Temperature alarm: Upper or lower limit value Q. Color: As shown in the picture R. Material: Plastic S. Package contents: 1 Tuya Smart temperature detector T. Only the above package contents are included, and no other products are included. U. Note: Light reflection and different displays may cause slight differences between the color of the items in the picture and the actual object. The allowable measurement error is +/- 1 - 3 cm.