✅120dB Alarm Door/Window Sensor - When someone illegally opens your door or window and enters your house or apartment. tolviviov smart door sensor will make a loud alarm of 120dB to stop burglar. Successfully scare away thieves, protect your property from damage and guard your family's health. | ✅Ideal Wireless Alarm System for Home - Search AGSHOME App on App store or Scan the QR code to download AGSHOME App. With the help of smart ecosystem, you can add extra door and window sensors, motion detectors, wireless doorbell, and water detectors into the existing smart security system. Remotely control tolviviov home alarm system wireless anywhere, anytime via smartphone. | ✅ Early-Warning Notifications- tolviviov smart alarm system pushs an alert to you if someone is opening the door or window in your absence. Your smart phone will receive real-time notifications for the window and door sensors. It is always worrying for people when they leave the house. But this alert system puts your mind at ease when you are traveling. | ✅DIY INSTALLATION - Easily set up tolviviov Smart Alarm System in minutes without tools. No professional is required. The wireless connection devices does not damage the wall. The alarm station should ALWAYS CONNECT to Power Adapter. Your tolviviov alarm system for apartment Only works on 2.4GHz WiFi networks, does NOT support 5GHz WiFi networks. | ✅BUY with Confidence -The wifi alarm system supports expansion of up to 20 sensors and 5 remote controls/keypads. No contracts and No subscription fee. tolviviov home alarm system can be used not only for your house or apartment, but also for offices, garage, shops, stores, condos. etc. No Monthly Fee. No Contacts.