4VWIN driveway alarm provides a convenient and economic way to alert you the moment when someone enters you house,garage or other properties.When movement is detected, the Passive Infrared (PIR) sensor sends a wireless signal to the receiver unit from up to 400 feet away.Using the receiver unit, you...

4VWIN Driveway Alarm provides a convenient and economic way to alert you the moment when someone is approaching your home before you see them. When movement is detected, the PIR sensor sends a signal to the receiver unit from up to 100 meters away. What's more, the receiver can pair with up to 50 se...