Description :
Sonoff TH16 is a wireless temperature and humidity monitoring switch which can remotely monitor and set temperature and humidity range to turn on/off connected appliances through the iOS/Android APP eWeLink. Just as the name indicates, the Sonoff TH temperature and humidity monitor device supports two maximum current supply specifications: 16A.
Sonoff TH16 remote temperature monitor and wireless humidity monitor WiFi switch supports presetting the range for temperature or humidity. When the temperature or humidity of your home environment falls within the range, it will automatically turn on or off the connected devices.
Sonoff TH16 supports three kinds of temperature monitor and humidity monitor sensors, mentioned below:
Si7021, AM2301, DS18B20.
Si7021(wiki) Highly Recommended.
Note: the sensors are not included in the package of Sonoff TH16.
The sensor should be plugged into the smart switch before power-on. It is not advised to plug or unplug the sensor after power-on. DS18B20 is waterproof, which can only measure temperature. Other sensors can measure both temperature and humdity.
With the eWeLink app, users can create simple conditional statement (Smart Scene) to trigger on/off other smart devices.  This means users can use Sonoff TH16 with Si7021, AM2301, DS18B20 sensor to detect temperature/humidity, and then set specified temp. or hum. ranges as conditions to trigger on/off other smart devices in the same account, such as Sonoff Basic, Sonoff RF, Sonoff SV, S20. This device works perfectly with electric fan, air conditioner, humidifier, fish tank, watering system, etc.Features:
Supports tracking device status
Supports remote turn on/off connected appliance
Supports presetting temperature and humidity to turn on/off
Supports 8 enabled countdown/single/repeat  timing tasks
Support checking real-time temperature and humidity
Support setting smart scene to trigger on/off other smart devices
Works with Amazon Alexa
Works with Google Home, Google Home Mini, Google Nest
Works with IFTTTSpecifications:
Input voltage: 90~ 240V AC
Input current: Max 16A
Max. Power: 3500W(16A)
Humidity: 5%-90%RH, Non-condensing
Operating Temperature: 0ºC-40ºC(32°F-104°F)
Wireless Standard: 802.11 b/g/n
Security Mechanism: WPA-PSK/WPA2-PSK
Enclosure Material: Fire-retardant ABS V0
Dimension: 114*51*32 (mm)
Supported temperature, humidity sensors: Si7021, AM2301, DS18B20
Gang: 1