Easy installation and do-it-yourself (DIY) with No Monthly Fees. Arm/disarm the system and monitor the sensor status with the SkylinkNet Smartphone App. Also, with the Keychain Transmitter (MK-MT) or Keypad (KN-MT) sold separately Multiple arming features. Arm away while leaving your home (all sensors are activated), arm home while someone is home (motion sensor deactivated, optional), and panic mode to immediately sound the alarm Works with Amazon Echo, with SkylinkNet Alexa Skill. Use voice to control your alarm system and home automation devices. SkylinkNet is IFTTT compatible, allowing you to integrate the system seamlessly with other manufacturer Smarthome devices. Works with Google Home as well Receive push notifications at any time when sensors are activated. In case of a power failure, the battery backup allows all units and sensors to continue operating as a local alarm with an Indoor (M-1) or Outdoor Solar Siren (SA-001S) Sold separately Add up to 100 devices (sensors and lighting receivers). Add up to 10 security cameras (WC-400PH & WC-510PH sold separately) to monitor different areas. Add up to 6 users per Hub, and user can add up to 6 Hubs per account