This Z-wave garage sensor provides information about the status of the garage door to your z-wave system. The VIS_ZG8101. The unit measures vertical and horizontal movement of the door Installation can be done with double-sided tape or with screws. The Z-wave sensor runs on batteries and is in sleep mode until motion is detected. Of course, the batteries can be replaced without having to remove the sensor from the door. When moving, the sensor gives a visual indication and simultaneously sends a message to the Z-wave controller. Furthermore, it also sends notifications to a maximum of 5 associated zwave devices. 2 thermal contacts offer the possibility to connect an external switch (parallel to the magnetic contact). A safety switch ensures that the device can not be undesirably removed or manipulated when used in a secured situation. The Z-wave sensor works with normal Z-wave inclusion, auto-inclusion and network wide inclusion. The z-wave unit is powered by a strong CR123 Lithium battery (lifespan 3.5 years under normal conditions).