* Remote control distance is 50-150m 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.
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.
Waterproof DS18B20 Temperature Sensor Temperature Transmitter 1m 
Home Portable Intelligent Oxygen Concentrator Generator machine Infrared Remote Control1-7L