The Aeon Labs KeyFob is a Z-Wave Remote Control, which features all the functionality of larger Z-Wave remote controls into a smaller, more modern design. Because of its small size it can be fit on a keyring and taken anywhere with you.This Key Fob Remote Control can be set up as the primary controller of a Z-Wave network or as an additional Z-Wave controller. This is perfect for including it as a remote control in an existing Z-Wave network. This device operates in two distinct modes: setup and use. Each of the four buttons on the Key Fob can control multiple Z-Wave devices with a simple push and can control up to 8 different scenes.It is powered by an internal lithium cell CR2450 3V battery.