Note: SONOFF DW2 doesn’t come with batteries into the package.
* Remote control distance is 0-3000M Ideal distance without any block and signal interfere, it would rise and fall about 10%-90% with the block and signal interference.
* 433MHz, strong power, bringing you new experience of remote control and much convenience in your daily life.
* It is only a common RF remote control. So it is only the professional can buy it alone or who buy our switch then need an additional transmitter.
* Suitable for remote control switches, anti-theft alarm, remote control door locks, remote control electric shutter doors and windows, water pump remote control, industrial control products, etc.
* Stable signal can pass through walls, floors, doors or windows.
【20A Max & Dry Contact Output】 Support to connect 20A Max high load, dry contact output.
【LCD Screen】Real-time monitoring of temperature and humidity data, the screen refreshed every 5S.
【6-Month Temp & Humi Historical Data by Hours】 Support to review the temp & hum history data by hour, day and month. Past 6-month history data can be exported in .xlsx format and accurate to hour.
【Local Automatic Control】Support LAN control, automatic control is more reliable. You can set 8 automatic control programs for you to save electricity bills and create comfortable surroundings.
【Voice Control and Query】Work with Alexa, Google Assistant, you can query temperature and humidity values by your voice.
Note 1: Each sensor (Si7021, AM2301, and MS01 need RJ11 adapter to fit for TH Elite.
Note 2: The RL560 is the new sensor extension cable with RJ11, it can connect the SONOFF temperature and humidity sensors to extend your device’s distance. Si7021,THS01 , AM2301, DS18B20and MS01 can be extended to 60M, and MS01 soil moisture sensor can be extended to 10M.
SONOFF AM2301 Temp and Humi Sensor of 2.5mm Audio Jack 
SONOFF MINIR2 - Two Way Wi-Fi Wireless Smart DIY Switch Turn traditional switch to Smart WiFi Switch With Timer Internet Work With AMAZON Alexa,google Home ,Nest 
Waterproof DS18B20 Temperature Sensor Temperature Transmitter 1m