This mat is easily concealed under carpet, an area rug or a decorative doormat. Activated by pressure, this transmitter notifies you when a child or elderly individual gets out of bed, or when someone enters or exits a room. In addition to use in the home, it is ideal for nursing homes, group homes, hospitals, or any noisy business setting. Also works great as a ôwheelchair pager™. When activated, the TransMatter will send a signal to a Sidekick II, Lamplighter, Crystal Reflections or Good Vibrations Receiver.