Features: Stay connection with this WiFi temperature sensor offering real time monitoring and fast alerts via the Tuya/small when temperatures exceed presets ranges, all without needing a repeater. Featuring external waterproof probe , it delivers lags free data updates for precise environmental tracking in demanding conditions. Essential for automotive technicians, lab operators, and facility managers requiring temperature oversight in critical spaces like refrigeration units or rooms. Monitor freezer efficiency, protect lab samples, or protect equipment effortlessly using magnetic mounting or adhesive for multifunction placement on metal surfaces. Create automated small homes workflows through Tuya integration, such as triggering units during heat spikes, while accessing downloadable temperature in ℃/℉ formats. Specifications: Material: ABS Equipment size: about 90mm×63mm×25mm/4x2.5x1inch electric : 110 to 250v Working electric : 5V1A Product power: <5W Built-in rechargeable battery: 3.7V600MA Battery standby time: 4 hours Alarm indication: digital tube or display screen blinks and beeps Distribution internet indication: green indicator light blinks Detected surrounding temperature: -20C--+80°C Detected environmental humidity: 0-100 percentage (no condensation) Temperature and humidity measurement accuracy: 0.5℃: 1% Measurement error: ±1°C: ±3% WIF band: 2.4G time: 15 seconds uncontrollable by default Package Includes: 1 set Temperature Sensor note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.