Beam break alert 4G app monitor alarm notify

Product Details

Perimeter Security Solution with app monitor wireless solar power beam break alert system.
Easy install the beam transmitter and receiver terminals on fence, courtyard, garden, driveway to create invisible light wall. When someone intrudes the light wall, the beam sensor will send alarm report to wireless receiver, the app monitor control panel.
So, intrusion will be notified on app on ios and android app notification.
App monitor alarm control panel has TCP/IP version (RJ45 interface), 2G version and 4G version.
TCP/IP version has app monitor only.
2G or 4G version can set alarm notification phone number and can send SMS and voice call for alarm report.
Package includes:
1* pair 3-beams solar power photoelectric beam sensor, with fixing bracket, but no pole included.
You may need to shop the pole from your local market.
Pole size is: diameter 3.7cm
details:
100m infrared distance solar powered intrusion barrier used for school, workshops, perimeter fencing of residential quarters etc. New technology wireless beams detector anti same frequency interference hop-frequency technology. Wireless beams detector solar power supply. Updated with LCD calibrator and DC power supply fohttps://vedardalarm.com/beam-break-alert-4g-app-monitor-alarm-notify-p-231
How to choose active infrared beams
There are different beams quantity such as 2 beams, 3 beams, 4 beams, 6 beams and 8 beams of photoelectric beam sensor. So, how many beams should I choose?