1 BY ONE Wireless Driveway Alarm, Motion Detector

Wireless PIR motion sensor & outdoor weather-resistant Detector Door Stop Security Alarm with Built-in Alert System. Create up to 4 detection zones with 4 sensors each, meaning up to 16 total sensors per receiver protecting your property. Choose from 36 available melodies to customize the alarm sound. LED lights on the Receiver indicate number "4" has detected movement. CUSTOMIZABLE& ZONE 1 for zone 1, its fixed ringtone is a scary sound, suitable for installing the detector in the area where beasts and animals infest gragra n - versiune s-n, Choose from 36 available melodies to customize the alarm sound of zone 4. The receiver can be plugged in using a power adaptor. It can also run on (3) AAA batteries as an auxiliary backup in case of a power outage. ( BATTERIES AND ADAPTER NOT INCLUDED) EASY TO INSTALL AND CUSTOMIZE Place your sensor/multiple sensors (expandable up to 16 sensors) anywhere on your property and when someone, vehicle, or large animal moves within 24 feet of the sensor angled eye.