With the push of a button on the Personal Pager, bedridden or disabled individuals can summon help without having to yell. The small transmitter sends an electronic signal to the receiver, indicating that help is needed. Signal can be sent up to 100 feet (30 m) through most walls and floors. Includes a cord to keep the transmitter handy. Completely wireless. No installation is required. The receiver has a discreet chime or can be set for vibration indicator for persons who have hearing loss. Convenient clip can be used for attachment to a belt or converted to an easel for tabletop use. Transmitter uses a 12 volt battery (included), and the receiving pager uses two "AA" batteries (not included). FCC certified.