Professional monitoring is required - starts at $34.99/month with a three year contract. Uses a cellular connection when WiFi is not available. Has a rechargeable battery in base station for when power is out. Has a keypad for passcodes. Can use your location to arm and disarm the alarm, but requires a higher level subscription. Can add a panic pendant for medical emergencies. Tested version used a base station with integral keypad - that is now two separate devices. The change does not affect the package's functionality.