1byone Wireless Home Security Driveway Alarm, 1 Battery Operated Receiver and 1 PIR Motion Sensor Detector Weatherproof Alert System Kit, 36 Melodies to choose

1byone Wireless Household Alert Security System is an easy-to-install and DIY home security system, which is perfect for your office, apartment or home. Just rest in absolute easy!
The 1byone driveway alarm provides a solution to alert you the moment someone enters your property. It's convenient and especially, with an affordable price. When the movement is detected, the Passive Infrared (PIR) sensor sends a wireless signal to the receiver unit up to 100m/328ft away. Using the receiver unit, you can choose to be alerted by a high or low chime or alarm tone. Adjust the volume of these alerts, and a silent LED flash is also available if you like. What's more, 1 receiver can pair with up to 5 PIR sensors so that a large area could be secured. We offer many combinations of sensors and receivers, simply choose what best fits you!

To avoid false alarms:
Don't mount the PIR sensor in direct sunlight (as PIR detects moving heat sources) or in a place affected by wind. When installing the sensor outside, a shady place with minimal temperature fluctuation will be an ideal choice. Also, avoid mounting this device on UPVC or metal doorframe surfaces as this will affect the communication between the sensor and receiver.

Specification:
Power Supply (Receiver): 2×1.5V AA batteries (not included)
Power Supply (PIR Sensor): 3 x 1.5V AAA batteries (not included)
PIR Sensor Detecting Range: 5 - 8 m / 16 - 26 ft
Communication Range: 100m / 300ft (IN THE OPEN AIR)
Weather resistant of PIR Sensor: IP44
Ring Volume of Receiver : 80dB ( within 0.5 m / 1.5ft )

Box Contents
1 x Receiver
1 x PIR Sensor
1 x Wall Plug
1 x Screw
1 x Instruction Manual