According to Dual-Lite, most emergency lights use a minimum of 10W to light a given space. However, the company’s patents-pending EV Series emergency light employs two high-power, long-life LEDs that require less than 2W. It measures 8.5” x 5” with a depth of 2.75”. Other features include a 120-/277-Vac input at 60 Hz, optional 220- to 240-Vac input at 60 Hz with a self-diagnostics option, a flame rated and UV stable white thermoplastic housing, adjustable LED lamp-heads, Ni-Mh battery, ac lockout, low-voltage disconnect, and optional self-test/self-diagnostic circuitry. Dual-Lite, Greenville, SC. (864) 678-1000.