🚨 SIREN & APP NOTIFICATION: 120 decibel alarm siren helps deter intruder. Check in from anywhere in the world and receive real-time alerts and notifications when your alarm is triggered through your smart phone..🚨 OUVOPO SMART ALARM: A smart way to protect your house with OUVOPO Wireless Home Security Alarm System. No contracts or SUBSCRIPTION FEE. 4-piece kit includes the 1 base station, 1 windows door sensors and 1 keypad, 1 motion sensor. It supports the expansion of up to 20 sensors and 5 remote controls/doorbell buttons..🚨COMPLETE ALARM CONTROL: Arm and disarm the OUVOPO alarm remotely through the Smart Life APP, Keypad, or Voice Control (Work with Alexa, Google Home, or Siri shortcut)..🚨 EASY SETUP & NETWORK: Pre-linked wireless accessories make installation fast and simple. Wi-Fi connection, Only works on 2.4GHz network, does NOT support 5GHz networks..🚨Entry&Exit Delay 60 Seconds: (Customize at App 30s, 60s, 90s etc) Entry Delay: Give you a short period time to leave your house once you armed the alarm. Exit Delay: Give you a short period time to disarm your alarm when entering your house.