Emergency lighting unit having remote test capability

Details Emergency lighting unit having remote test capability Emergency lighting unit having remote test capability

1990-01-22

1992-09-15

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

315 86, 340515, 340527, 340641, 34082569, 34082572, G08C 1700, G08B 2900, H02J 900, H02J 700

Patent

active

051481588

ABSTRACT:
An emergency lighting system includes a lighting unit having a battery which is kept in a charged condition in the presence of voltage on a power line to which the unit in connected. Upon loss of voltage, the battery is caused to discharge into a pair of flood lamps to provide emergency illumination to an area surrounding the unit. To provide for periodic testing of the unit without requiring the user to actuate a switch on the unit the system includes a radio frequency receiver in the unit which responds to signals generated by a hand-held radio frequency transmitter actuated by the user. A two stage battery charging circuit and a low voltage lamp cut-off circuit are included in the lighting unit for improved battery life.

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