VANDAL RESISTANT DESIGN; The ARMA LED lens cover has been designed to fully enclose the lamp assemblies. This protects the lamp heads from tampering and unwanted repositioning. Vandal resistant housing latch clips ensure the integrity of the ARMA LED and discourage fixture tampering.; AUTO-TEST; The autotest system automatically performs one 5 minute discharge test monthly and every 6 months it performs two 30 minute discharge tests, 24 hours apart. This tests both full battery capacity and recharge capability. The information is communicated simply and intuitively to maintenance personnel via a single multicolor LED. No need to memorize complex indicator protocols. No confusing array of multiple, same colored LEDs that can be difficult to read from floor level.; INSTALLATION; The ARMA LED emergency luminaire is suitable for surface wall or ceiling mounting. Suitable for indoor / damp installation. 120/277VAC