Wireless Door Bell Alarm

Wireless Infrared Monitor Sensor Detector Entry Door Bell Alarm.

-Wireless door chime is great for retail store, shops, business, salons, front / back / side door, etc. Attach this infrared alarm anywhere you want and instantly know when someone crosses the beam.

-Working Range: Up to 100 meters / 328 feet between receiver and transmitter

-Receiver requires 2x AA batteries, transmitter requires 1x 9V battery (batteries not included)

-Material: Plastic. Melody: for Alice

-Easy to install, can place everywhere

Features: 

-Infrared sensor detects motion and sends a signal to the receiver 

-Wireless installation, just place the sensor at the entrance 

-Send audible chime sound, alerting you that somebody is approaching 

-Transmitter Size (L x W x H): Approx. 3.5 x 2.4 x 1.8 inch 

-Rece