tolviviov WiFi Smart Door/Window Alarm System 8-Piece Kit – App Alerts, Compatible with Alexa, No Monthly Fee, Expandable DIY Wireless Home Security, 1 Siren, 5 Sensors & 2 Remotes (8 Pack)

Complete 8-Piece Security Kit: This tolviviov home security system includes 1 alarm siren station, 5 door/window sensors, and 2 remote controls. It offers an affordable, contract-free solution to protect your house or apartment, providing peace of mind without monthly fees
Smartphone Control & Real-Time Alerts: Manage your DIY security system entirely via the smartphone app. Receive instant notifications on alarm triggers and control the system remotely. Note: Operates exclusively on 2.4GHz WiFi networks (not compatible with 5GHz)
Easy DIY Installation & Expandable System: Set up this wireless security system in minutes without tools or wall damage. The system supports expansion with up to 20 additional sensors (e.g., motion detectors, water leak sensors) and 5 keypads/remotes for whole-home