Emergency lighting system with a DC sensing load relay
Emergency lighting system with automatic diagnostic test
Emergency lighting test system and method
Emergency power supply
Emergency/normal lighting circuit for a gaseous discharge lamp
Exit illuminating system
Fail-safe lighting system with load shedding and dimming
Fail-safe uninterruptible lighting system
Fail-safe uninterruptible lighting system
Flashlight
Fluorescent ballast with emergency lighting capability
Fluorescent emergency ballast self test circuit
Fluorescent lamp assembly
Fluorescent lamp ballast operable from two different power suppl
Force field anti-noise-induction system
Illumination unit for normal and emergency operation
Intelligent electrical switching devices
Inverter circuit protection
Lamp control circuit having a brightness condition controller ha
Lamp switching