✔ Wide Range of Uses - Motion detection is an essential part of any home security solution. The waterproof sensors in this system use Passive Infrared to detect heat and movement so you can quickly be alerted to movement on your driveway, front porch, gate, shed, walkway, or even swimming pool (for when kids get too close). Great for homes, businesses, and offices. | ✔ Long Distance Wireless - Communication range up to 1000ft/300M from each sensor to the receiver. Cars, people and animals can be detected within 24ft/8M of each sensor’s angled eye. Think of this system as your long-range doorbell. | ✔ 3 Alert Options & 36 Chimes to Choose From - Select one of 3 ways of being alerted (Sound/LED Flash/Sound and LED Flash) and 3 volume levels from 25-80dB. Also select from 36 chimes and doorbell sounds. Be alerted to visitors, scare off unwanted intruders, or even know when your children have accessed restricted areas. | ✔ Easy to Install & Diy - This system is fully-expandable, with plug-and-play sensors that can be set up within minutes. Pair each receiver with up to 5 sensors for full coverage of your property. The sensors can be mounted to walls, fence posts, trees, or any other surface, providing extra layers of security and home safety. | ✔ Fully Expandable System - Our wireless driveway alarm sensor is fully expandable. Simply place your motion sensor/or multiple sensors (expandable up to 5 sensors) anywhere on your property and when a person, vehicle, or large animal moves within 24 feet of the sensor’s angled eye, a signal will be sent to the receiver that will chime in your home just like a long-range doorbell.