800 Meters Solar Wireless Driveway Alarm - Outdoor Weather-Resistant Motion Sensor & Detector, DIY Security Alert System

Solar-powered motion sensor with a rechargeable battery that is continually charged by sunlight, so there is no need to replace the sensor battery. Detects motion in up to different zones and provides alerts using both light and sound. Designed for outdoor use with a weather-resistant housing. Fully expandable: up to 4 sensors can be linked to 1 receiver, and a single sensor can be paired with unlimited receivers. Restarting receivers or sensors will not cause any missed records.