Abstract: A structure for aligning a canopy for an exit sign with a standard wall-mounted electrical junction box. The structure is constituted of a separate plate which is adapted to be fastened to the back cover of an exit sign so as to form a mounting structure adapted for facilitating the attachment of the exit sign to a wall-mounted electrical junction box, and which incorporates slots adapted to be engaged by protuberances on the canopy for aligning the latter with the junction box in predetermined selective orientations.

Abstract: A structure for mounting an exit sign to a standard wall-mounted electrical junction box. The structure is constituted of a separate plate which is adapted to be fastened to the back cover of an exit sign so as to form a mounting structure adapted for facilitating the attachment of the exit sign to a wall-mounted electrical junction box.

Abstract: An system is provided for testing emergency lighting units using a receiver connected to the emergency lighting unit and a portable transmitter operable remotely with respect to the emergency lighting unit. The emergency lighting comprises a transfer relay for switching a battery between a primary power source and a lamp. A TEST button and the receiver each include a normally closed contact switch connected in series with each other, as well as with a primary power source input and transfer control circuitry. The transmitter generates encoded signals for wireless transmission to the receiver as long as a control switch on the transmitter is being activated by a user. The receiver receives and decodes the encoded signals and opens its normally closed relay as long as encoded signals are being received, causing the transfer control circuitry to activate the transfer relay to switch the battery from the primary power source to the lamp.

Abstract: A self-diagnostic circuit for an emergency lamphead is disclosed that is effective during standby operation of the lamphead to indicate whether the lamphead is capable of operating in an emergency mode. The self-diagnostic circuit includes a high-impedance circuit path connected in series with the lamphead and including an indicator, such as an LED, which is energized by a battery current passing through the circuit path and lamphead during the standby mode operation. The battery current is insufficient to illuminate the lamphead, but is sufficient to energize the LED whenever proper electrical continuity exists through the lamphead. A second high-impedance circuit path may be connected in parallel with the lamphead, in order to energize a second LED when proper continuity does not through the lamphead.