Exquisite and Novel DesignWith the design of the reading screen, the temperature, humidity, battery capacity and Bluetooth icons are clear at a glance. Magnet design helps for easier placement. The button on the side can switch from Celsius to Fahrenheit. bullet point Powerful data recording: The data recording interval is adjustable (10s, 30s, 1min, 2min, 5min, 10min, 30min), and the data is collected at one minute intervals by default. If it is not far from the machine, you can check the temperature and humidity on the mobile phone (within the Bluetooth range) Wide FunctionsWidely used in baby room, humidor, storage room, laboratory, wine cellar, sausage making, bacon bacon, garage, reptile or small animal breeding, greenhouse planting, etc., beyond your imagination. USB input: DC5V/ 2A (dry battery cannot be used when using USB) Input voltage: DC3v LRO3*2 Quiescent current: 75uA Alarm current: 60mA Low voltage and under voltage: 2.2V Wi-Fi: 802.11 b/g/n Detection temperature: -10-55C Detection humidity: 0-99%RH Alarm sound pressure: 55dB Installation method: wall hanging Working temperature: -10-60 Working humidity: maximum 90%RH Quantity shipped: 1 temperature sensor, excluding other products Product color: as pictured Product size: 65mm*65mm*48mm