Abstract: An apparatus and method for transmitting information from an emergency power system (EPS) to control devices of remotely connected loads without any additional hardware or wiring. The EPS causes the frequency, phase or magnitude of an AC power signal to be varied according to an established protocol, that is detected by the remote control device, which operates the load in accordance with the protocol.

Abstract: An automatic power transfer switch system includes a dimmable lighting load adapted to operate under a variable amount of power in dependence on a dimming control signal, an automatic transfer switch configured to connect a primary electrical power source to the dimmable lighting load under normal operating conditions of the primary electrical power source in a first mode, and to automatically disconnect the primary electrical power source from the load and connect an emergency electrical power source to the load under malfunctioning operating conditions of the primary electrical power source in a second mode, the automatic transfer switch further including an integrated load reduction dimmer configured to provide a dimming control signal to the dimmable lighting load.

Abstract: An automatic power transfer switch system includes a dimmable lighting load adapted to operate under a variable amount of power in dependence on a dimming control signal, an automatic transfer switch configured to connect a primary electrical power source to the dimmable lighting load under normal operating conditions of the primary electrical power source in a first mode, and to automatically disconnect the primary electrical power source from the load and connect an emergency electrical power source to the load under malfunctioning operating conditions of the primary electrical power source in a second mode, the automatic transfer switch further including an integrated load reduction dimmer configured to provide a dimming control signal to the dimmable lighting load.

Abstract: An automatic transfer switch for transferring the electrical power supplied to a load between a primary power source and a secondary power source employs one SPST bistable relay, and two SPDT bistable relays to switch power between regular and emergency sources. A fourth relay, a SPDT relay, is optionally employed to direct power from the emergency source to emergency lighting fixtures so that emergency lighting is provided despite the presence of dimming circuits or switched off circuits or the like.

Abstract: An automatic transfer switch for transferring the electrical power supplied to a load between a primary power source and a secondary power source employs one SPST bistable relay, and two SPDT bistable relays to switch power between regular and emergency sources. A fourth relay, a SPDT relay, is optionally employed to direct power from the emergency source to emergency lighting fixtures so that emergency lighting is provided despite the presence of dimming circuits or switched off circuits or the like.