Gsm Alarm Systemtuya Wireless Wifi

The alarm is PG505 2G version, which is a key alarm, and it is used with WIFI and SIM cards. WIFI provides network functions for Tuya App, SIM cards provide call and SMS functions. 1This alarm is to install a sensor on the window or door. If you open the door or window, it will trigger the alarm, send a loud alarm, and send a text message through the smart life app to inform you. If you put the SIM card in the alert, it will call you the voice call. If the PIR movement sensor is installed in the need, it is the infrared sensor of the human body. When someone approaches, it will send a warning voice, and it will also send a text message and call you. If you install smoke detectors, carbon monitor detectors, and gas detectors, you will also notify you when fire and gas leakage. It has a lot of settings.