Patent ID: 6310548
Filing Date: 2001-10-30
Classification: G08B

Abstract:
A status indicator system for use with a building having a door to be monitored and a power grid network which energizes a plurality of electrical outlets with an alternating current, the status indicator system comprising:a switch operable between a first position and a second position, wherein the switch is in the first position when the door is at least partially open and being in the second position when the door is closed;a transmitter electrically coupled with the switch, the transmitter being configured for electrical coupling with the power grid network of the building such that when the transmitter is electrically coupled with the power grid network the transmitter periodically transmits a first signal over the power grid network when the switch is in the first position and periodically transmits a second signal over the power grid network when the switch is in the second position;a receiver having a plug configured to removably electrically couple with a select one of the plurality of electrical outlets energized by the power grid network, the receiver being configured to selectively receive the first signal and the second signal from the transmitter over the power grid network when the plug is electrically coupled with the select one of the plurality of electrical outlets; andan indicator electrically coupled with the receiver such that the indicator is energized by the receiver when the receiver receives a select one of the first and second signals.