Emergi-lite ESC Series combination of unit equipment and pictogram exit sign. The unit shall be made of solid steel sheet metal and be suitable for universal mounting: wall, end, or ceiling. The legend housing shall have a maximum depth of 2-1/8 in. The legend face plate(s) shall be constructed of robust clear polycarbonate panel(s) with an opaque border colored factory-white. Each face plate shall come standard with two legend films for pictogram and direction selection. The light source shall be white light-emitting diodes (LED) and shall provide even illumination in normal and emergency operation. The power pack shall include one circuit board with test switch and pilot light for battery charger and legend LED driver. The unit shall include one 6-volt, maintenance-free, sealed Lead-Calcium battery and shall provide minimum 30 minutes of emergency lighting upon AC power failure. The electrical power available for emergency lights shall be 28 W or up to 72 W, as specified. The emergency heads shall require no tools to adjust and aim. The heads shall be made of durable thermoplastic construction and include 6 V 4 W MR16 LED lights or as otherwise specified. Universal mounting - end, wall or ceiling Legend illuminated by long-life white LED's Comes standard with two pictogram films, for direction selection Comes standard with two high-performance 4 W MR16 LED lamps 4 W LED emergency lights provide 34 ft of egress illumination on a 6 ft wide path