SH-AL Wireless 433MHz Roller Shutter Garage Gate Alarm System Portable Magnetic Detector Thick Switch Anti-Theft Security for Rolling Sliding Gate Motor Remote 4 Line Intercommunication with 4

4 Line Intercommunication with 4 Beetel Phones

2nd standard installation of Em Lock on Door Frame (Metal

allowing for convenient installation without the need for complex wiring

there is USB port as emergency charge

SH-AL Wireless 433MHz Roller Shutter Garage Gate Alarm System Portable Magnetic Detector Thick Switch Anti-Theft Security for Rolling Sliding Gate Motor Remote 4 Line Intercommunication with 4Feature: Portable, easy installation, Sensor Switch Material: Stainless Steel ABS Product name: Rolling Gate Alarm Battery: AAA*2pcs Adjustable volume ranges: 65 decibels 120 decibels Product Description Working principle: By sensing the illegal opening of the roller shutter, an alarm is triggered, and the alarm door magnet can be remotely controlled to enter the working state, stop the alarm, emergency alarm and other operations 1. Remote control