Alarm System for Home Security,24Pcs DIY WiFi/4G Smart Wireless Home Alarm System Kit,Door/Window Sensors and Motion Detectors with Instant App Alerts,Compatible with Alexa,No Monthly Fees

【No monthly fees, comprehensive functions】: The home security system can pair with up to 100+ sensors and connect wirelessly to the hub simultaneously. It triggers multi-channel alarms (e.g., hub, APP, call alarms) instantly when unauthorized intrusion is detected—all functions are permanently free of monthly fees
【Wi-Fi & GSM/4G Wireless Alarm】: Connect your home WiFi to the home alarm system or insert a SIM card to enable network connectivity for remote notifications and various app functions, providing peace of mind while away on vacation or camping
【Easy Installation & Comprehensive Functions】:Alarm system is simple to install without professional help. Door magnetic sensors or motion detectors are quick and sensitive, immediately triggering the main unit to emit over 110dB alarm when activated, while automatically sending APP notifications, phone calls, and SMS alerts.