BetterLink Weatherproof Solar Driveway Alarm System — Outdoor Motion Detector & Sensor with 120dB Siren, Sound & Light Alerts for Indoor/Outdoor Protection (2R2S)

A wireless, solar-powered driveway alarm that’s simple to set up and grow as needed. Install the detectors on walls, fence posts, trees or virtually any surface to create continuous, 24-hour motion monitoring for your family’s property and safety. The weatherproof units deliver both audible and visual notifications — including a powerful 120dB siren — to alert you to activity. Expansion is straightforward: a single receiver can expand/handle up to 16 motion. Ideal for monitoring and protecting outdoor or indoor areas with reliable sound and light alerts.You may also like W214 4G GSM Wireless Burglar Smart Alarm — Smart Home Security with Color LCD Display & IP Camera, Easy to Use.