Built-in Rechargeable Battery: Can be powered by external DC5V power supply or standby battery. To power the detector via battery, open the back cover and switch on the detector. Temperature Unit: Supports Centigrade or Fahrenheit. Check the history record of temperature anytime. Multi-User Support: Share the device with other users through the app. Built-in Buzzer: The buzzer will sound when the detector is triggered. APP Control: Download the Tuya Smart or Smart Life app to control the device. Compatible with Android and iOS smartphones. The KONLEN temperature sensor with 1-meter cable is suitable for indoor and outdoor detection. The digital display main panel is not waterproof and must be installed indoors. Model Number: -951T Platform: Tuya Display: LED Digital Display Detection: Temperature Power Source: External DC5V 1A power adapter Rechargeable Battery: 3.7V 600mAh Battery Standby Time: Approximately 6 hours Temperature Detection Range: -40 to +120°C Wi-Fi Band: 2.4GHz (does not support 5GHz) Temperature Alarm: Configurable upper or lower limit values Color: As shown in image Material: Plastic Package Contents: 1 x Tuya Smart Temperature Detector Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual product. Measurement error allowance: +/- 1-3cm.