YBJ WiFi Home Security Alarm System, DIY 4G Smart Home Security System, Compatible with Wireless 433MHz Motion detectors, Door/Window sensors, and Sirens, Supports Amazon Alexa.

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About This [Easy Installation]No professionals required. No wiring or drilling needed. Simply mount the main unit on the wall (screws included) and connect to power. Supports expan sion to 100 learning/storage/location units. Flexibly configure remote controls, RFID cards, and wireless detectors. [Mobile Remote Control]View and control your security system anytime via smartphone (requires SIM card or WiFi). Arm/disarm, voice monitoring, and intercom functions available. [Intrusion Protection]When triggered, accessories instantly send wireless signals to activate the alarm system. It emits a high-decibel alert to deter intruders while simultaneously calling or texting preset contacts. [Built-in Battery]The system remains fully operational even if wires are cut or power is interrupted. It continues to effectively deter intrusions during power outages. [Dual-Mode Network Support]Compatible with 2G/3G/4G SIM cards (purchased separately) and 2.4GHz Wi-Fi networks (does not support 5G). Automatically switches to GSM communication when Wi-Fi power is lost. [Scheduled Arming/Disarming]: Set timed operations via the app or keypad to avoid repetitive manual actions. Also configurable delay times prevent false alarms triggered by people leaving the premises through armed zones. Overview Brand : YBJ Power Source : Battery Powered Compatible Devices : Wireless 433, smartphones, Smart Life app, Tuya app, Google, Alexa Item dimensions L x W x H : 7.3 x 0.6 x 4.9 inches Connectivity Technology : Wireless Show more