GSM and WiFi Wireless Home Alarm System, DIY Burglar Alarm
GSM and WiFi Wireless Home Alarm System, DIY Burglar Alarm System for Home Security with App Control, Door Window Sensor, Motion Detector,Work with Google Assistant and Alexa (PG-105-F) [ DIY Home Security System ]: NO professional needed, No wiring or drilling required. Easy to install in minutes. Only need to fix the alarm host to the wall (screws are included). Then connect the alarm host to power source. The backup battery works for 8 hours, only as an emergency battery. It supports expansion of up to 100 accessories. You can add extra PIR motion detector, door window sensor, remote control,...