Wireless Smart Home Security System Office Motion Sensor WiFi Alert Alarm Kit Home Security System Features â€? Wifi Home Security System : Home Security System With a free IOS/Android smartphone app, Home Security System can be easily controlled by arming, disarming, and home modes with also a simple remote control. In the event of an emergency, you can also seek help by pressing the â€sSOSâ€? button to send a help signal â€? APP Control Home Security System : When important entry areas such as windows/doors are opened, or when motion is detected, get instant push alerts on your phone and an alarm will issue a 120dB alert. The main controller hub of Home Security System is responsible for connecting with all of the sensors â€? The Extensibility: Home Security System supports the expansion of up to 20 sensors and 5 remote controls paired with one main panel hub. If Home Security System loses power, Home Security System has a backup battery to support 8 hours working. Home Security System can support rename different zone names, sensors names, and zone property names. â€? Home Security System Compatible and Network Support: Voice control is compatible with Amazon Alexa/Echo and Google Home, Wi-Fi connection, and only works on 2. 4GHz bandwidth. Home Security System does not support 5GHz networks Home Security System Included 1 x White Wifi Main Siren 1 × 433mhz Pir Motion Sensor 1 × 433mhz Door Sensor 2 × 433mhz Remote Controls 1 x Motion Sensor Holder