Inside the base, there's a siren, a backup battery the company claims
will last up to 24 hours, and a SIM card for cellular communication. The entry sensors are also redesigned, and are much smaller about half the length they were before, squarer, and modern looking. They're powered by inexpensive, user replaceable CR2032 coin cells that should last an average of five years, and the system will warn you when they need to be replaced. Installation requires no wiring or drilling; I simply pulled off the battery activation strips, peeled the backing on the 3M Command like strips, and adhered each component after naming and pairing it with the system more
on that below. Components are easy to move around without damaging your walls, and you can take the system with you to your next home, which is a welcome feature. The keypad, also available in black or white and powered by four standard AA batteries, sees the biggest design improvement, with a 2. 5 inch LCD replacing a tiny monochrome screen. Nicely sized, round backlit rubber buttons replace the tiny oval ones on the old keypad. A proximity sensor is a nice touch, illuminating the keypad for nighttime use. The larger screen also makes the system setup process much easier, since you just pair all the components using easy step through menus on the display. Each component has a small button you press to pair it with the system.