Model Number:AS90W Origin:Mainland China Smart home platform:Tuya,Google Assistant Certification:CE,FCC,RoHS Wi-Fi::2.4GHz 802.11 b/g/n Product Name:temperature humidity sensor Feature 15:WiFi Temperature Probe Working voltage::5V USB Line Temperature measurement range::-19~60°C (28.5~42.8°F) Feature:thermometer wifi WiFi Hygrometer Thermometer Sensor with External Probe,Aquarium Thermometer,Wireless Digital Monitor Real-time sync Update, Backlight LCD,Work with Tuya app,for Home Greenhouse,Fish Tank, Refrigerator Product paramete r Wi-Fi system: IEEE 802.11 b/n/g 2.4GHz Working voltage: 5V Quiescent current: 30mA Humidity measurement range: 0~100%RH Temperature measurement range: -19~60°C (28.5~42.8°F) Battery Specifications: 3.7V/500mAh Brightness measurement range: 0~100% Temperature measurement accuracy: ±0.3°C Humidity measurement accuracy: soil 2% Charging time: ≤2 hours Built-in battery usage time: ≤4 hours (fully charged) Size: 86*86*22.8mm Product Discription: About this item About this item WIFI TEMPERATURE HUMIDITY MONITOR WITH DOUBLE ALARM: Connecting with 2.4GHz WiFi(No 5G support), you can remotely monitor the smart humidity sensor. You can set the upper/Lower limit of the alarm via Tuya/Smart life app. The wifi temperature sensor will sound an alarm and send a notification to your phone when beyond preset value REAL-TIME UPDATE & CALIBRATION FUNCTION: This remote temperature monitor is equipped with exceptional microchip and a sensitivity sensor, support Real-time data update. Users can also choose the temperature or humidity report time, such as 1s or 100s.The digital thermometer for home with calibration function, the temp and humidity can be manually calibrated via the App VOICE CONTRO & LARGE BACKIGHT SCREEN: The temperature and humidity sensor compatible with Alexa, Google Assistant. After connecting, you can know the current temperature humidity by voice. Thermometer WiFi is equipped with a 2.9in Backlit LCD display, allows you to check the readings in any dim situation. You can also turn off the backlight manually. HOME AUTOMATION: The Indoor Humidity Meter and Temperature Sensor can be linked with other Tuya smart devices, such as smart plugs, fans, etc.You can set a condition in the smart scene, for example, the air conditioners is turn on when the temperature reaches the limit value, or the dehumidifier in your room starts working once the humidity is over higher WITH EXTERNAL PROBE & BACKUP RECHARGEABLE BATTERY: The room temperature monitor with an external temperature sensor probe, you can use it to monitor the refrigerators, fish tanks, incubators, greenhouses, storage tanks, guitar cases, etc. It powered by USB cable and built-in rechargeable battery which used as a backup battery can be used for more than 5 hours after power failure. We offer a 24 month warranty on Room thermometer for home QA: 1. Remote Control You can remotely view temperature humidity via smart phone using the app,tuyasmart or smart life. 2. Real-time update of brightness, temperature or humidity. Humidity values can be manually corrected 3. Temperature Unit Selection in APP You can choose ℃ or ℉ as the temperature unit through app. 4. Third-party Voice Control Works with amazon alexa, google assistant. 5.Battery Life Built-in 500mAh lithium battery, the use time is about 4 hours 6.Time/Date Show time and date after connected with internet. 7.Muiltple connection User can use the app to add our device in smart life app in 3 ways.Bluetooth or wifi or hotspot Tuya Smart Temperature Humidity Monitor Make Your Home Smarter Download “Tuya Smart” or "Smart Life" on App Store or Google Play. Open the app and sign up an account with your email. You can also export the data as csv. format to this email address. Add a device and Press and hold the black Reset button on the back of the device for 6 seconds until the LED light flashes to pair Choose a suitable WIFI(2.4GHz) and enter the passwords after naming; the device will be added successfully after connecting WIFI Name your device. WiFi Temperature Humidity Sensor With an external waterproof probe .  Various usage scenarios: It can be used as an indoor humidity gauge temperature sensor without adding the probe, suitable for baby room, apartment, greenhouse, RV, basement, garage and other places Add the probe to use as an aquarium thermometer, suitable for fish tank, incubator, reptile tank etc. If Link with a TUYA Plug, Smart Control Heating Fan Cooling & Humidifiers. If Link with Tuya plug or infrared remote control, Smart control fans, humidifiers, air conditioners, and other smart products. Push notification and smart linkage scenarios To get alerts or perform other equipment work when the temperature or humidity exceeds a preset value, we can create scenarios. For example, if the temperature is higher than 30 degrees, send a free push notification through the message center, and turn on the smart air conditioner. Set a smart scene to trigger other Tuya smart device For example--You can set a condition in the smart scene that is the air conditioner is turn on/off when the temperature reaches the limit value, or the dehumidifier starts working once the humidity is over higher Link with Other Tuya Smart Device ℃/℉ Switch freely You can switch between °C and °F by pressing the reset button once or by changing the temperature unit via the app. With Waterproof External Probe Can be connected to an external temperature sensor To monitor the temperature of reptile tanks, terrariums, humidors, fish tanks, and refrigerator. Note: Our wifi temperature and humidity sensor does not support external probes of other brands. Wall thermometer indoor powered by the included USB cable, Needs to be plugged in all the time. The rechargable battery only as a backup battery which can be used for 5 hours after power failure Never Power Off The thermometer is easy to mount anywhere using the included screws. It can also be placed directly on the desktop or other places Place it Anywhere