Description Report Item Tuya Wifi Temperature Humidity Sensor Alarm Smart Home indoor Outdoor Thermometer Detector For Plant Aquarium Support Alexa 1M temperature cable cannot be used alone. If you do not have a temperature sensor, please do not buy it! Notes: 1.Device firmware upgrade: the external probe can display decimal point (0.1°C).2.After connecting the temperature sensor cable, you need to manually calibrate the temperature of the sensor yourself. Feature: 1.New Tuya WiFi Digital Display Temperature and Humidity Sensor, No Hub Required2.The built-in high-precision digital sensor can quickly and accurately find the temperature and humidity changes3.USB charging, no need for you to buy batteries, energy saving and money saving.4.This Sensor has a temperature probe(optional), which can test Water temperature/fish tank, etc humidity exactly. It was used widely.5.You can set the temperature and humidity to go online and offline, and alarm immediately when the temperature and humidity is exceeded. Specifications: Product name: WiFi Temperature &Humidity sensorWorking humidity: 0~100%RHWorking temperature: -19℃~60℃(-2.2℉-140℉)Temperature measurement accuracy: ±0.3℃(internal)External sensing line temperature error:±1°CHumidity measurement accuracy: ±2%Brightness measurement range: 0~100%Working voltage: DC 5VQuiescent current: 30mABattery Specifications: 3.7V/500mAhCharging time: ≤2 hoursBuilt-in battery usage time: ≤4 hours (fully charged)Temperature probe: 1 meterWi-Fi standard: IEEE 802.11 b/n/g 2.4GHzSize: 86*86*22.8mmAPP name: Tuya Smart or Smart Life Package Included: 1*Smart temperature and humidity sensor1*User manual