433MHz GSM Wireless Home Burglar Alarm System Tuya App Control, High Sound

A wireless 433MHz GSM home alarm system with Tuya mobile app control and a loud built-in siren. Door and window contact sensors can be mounted on openings; when triggered they activate the siren and send a text message through the app to notify you. If a SIM card is installed, the system will additionally place a voice call to alert you. When a PIR movement sensor (human-body infrared) is fitted, approaching motion will prompt a warning voice from the panel and also generate a text message and call. The system also supports smoke detectors, carbon monitor detectors, and gas detectors to warn you of fire or gas leaks. Multiple operating modes are available—for example a mute/home mode and an alarm/protection mode for when you leave—and you can arm or disarm the system remotely via the mobile app.