Smart Life Devices: Wireless home alarm kit has a stylish and refined appearance. White color meets simple European style; it's plug-and-play and lightweight and can be carried with you; WiFi network alarm supports APP push to ensure stable and reliable alarm performance; with wireless sensor. Low battery voltage alarm function; supports voice control; up to 4 remote controls and 50 50 wireless detectors to learn action storage positions. Support WIFI or GSM signal GSM WiFi network alarm supports APP push to ensure stable and reliable alarm performance. Without the SIM card, you can also use the on-site alarm function. No monthly fee and no contract to sign with a security company. After inserting the SIM card, you can import six groups of phone numbers for alarm and two groups of phone numbers that receive alarm SMS Support Google, Alexa and Tuya : Wireless home anti-theft will not destroy the style of home decoration or damage the walls; Powerful embedded processor based on 32-bit Cortex-M3 core, Support Tuya APP remote control and compatible with Alexa, Google Assistant for voice control. . Quick and simple installation: Wi-Fi home alarm installed in minutes without preventive technical knowledge. Can be connected with poles, screws and adhesive strips: all these devices are included in delivery. Sleek modern modern design perfect for any interior