Attractive and easy to install, the Exitronix GVLED-U-WH-EL90 combination LED exit sign combines quality LED illumination with contemporary, soft corner styling to complement any application. This VLED-EL90 series LED exit sign makes for easy recognition thanks to its green letters on a solid white background, while the J-Box mounting system allows for ceiling or wall mounting. The LED exit sign operates at 120 or 277 volts and comes with two LED lamp heads, each containing 12 long lasting, ultra-bright white LEDs. Featuring a brownout circuit that monitors AC current and activates the emergency lighting system once a set reduction of AC power occurs, this Exitronix GVLED-U-WH-EL90 LED exit sign comes with two face plates with a white thermoplastic cover.