YBJ 4G and WiFi Home Alarm System, 13-Piece-Kit Wireless Burglar Alarm System for Home Security with App Control, Door Window Sensor, Motion Detector,Work with Alexa and Google Assistant

• [ 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, RFID cards and other wireless detectors as you need. [ Supports GSM and WIFI Dual Network ]: Supports 2G/3G/4G SIM Card and 2.4GHz wifi, but does not support 5GHz wifi. If a SIM card is inserted,the alarm host can work normally even if the wifi is disconnected. [ Work with "Tuya" and "Smart Life"APP ]: Free mobile app for iPhone and Android phones, so you can control your alarm system from anywhere with your smartphone and get instant notifications of alarms alert in your house or apartment. Compatible with Amazon Alexa and Google Assistant, you can voice control your alarm system. [ One-click SOS button ]: In an emergency, press the SOS button in time to protect your family's safety. Support multi-channel alarm mode such as APP push/SMS push/Voice monitoring,etc. Supports up to preset 5 groups of phone number with a SIM card inserted. When a sensor is triggered, the alarm host will auto dial the phone number you have saved to notify you at the first time. [ Package Includes ]: 1* alarm host. 1* PIR motion detectors. 1* door window sensors. 2* remote controls. 2* RFID card. 1* siren.