1byone Driveway Alarm, 36 Melodies, 1 Plug-in Receiver 2 PIR Detectors

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 ranges 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
Three Alert Options & Thirty-six Chimes To Choose From – Select one of three ways of being alerted (Sound/LED Flash/Sound and LED Flash) and three volume levels from 25-80dB; Also, select from Thirty-six chimes and doorbell sounds; Be alerted to visitors, scare off unwanted intruders, or even know when your children have accessed restricted areas