TOGUARD W10 Outdoor Motion Sensor Driveway Alarm Security SystemAbout this item Solar Powered PIR Driveway AlarmThe sensor of this device is run through environment friendly solar power,it charges itself via the solar panels installed on top of it. Therefore, you do not need to go through the hassle of charging the sensor over and over again or think about replacing its battery. All you have to do is, install it in your driveway where it can easily access sunlight and relax. Fully Expandable Alarm SystemThis alarm