MB Series Self-Contained Emergency Luminaire Dichoroic halogen, with 180' adjustable sets and plastic-cover anti-dust Housing Electro-galvanized steel sheet 1mm. With epoxy powder and stove enamel coated anti-rust corrosion proof. Battery Non-maintained sealed lead acid battery, based on ISO9001 and ISO41001 certification with solid state system automatic battery charger. Constant voltage chraging system with 14-20 hours charging period. Electrical Rating AC 220 Volt, 50 Hz, +/-10% - Single phase Safety Features Low-high voltage cut-off, prevention battery over charge & discharge AC fuse-preventing short circuit and overload for main income AC220 Volt DC fuse-preventing short circuit and overload for charging & load