Harsh environment emergency lighting units with steel, thermoplastic or fiberglass cabinets. The ESLPK Series battery units are specifically designed for use in industrial facilities where equipment is exposed to dust, water, oil or corrosive substances. NEMA-12 classified to protect circuitry from harmful dust or liquid sprays, sealed and gasketed unit cabinets are available in steel, thermoplastic or fiberglass in a variety of sizes.SPECIFICATIONS:- Solid-state pulse-type charger – current-limited,temperature compensated, short-circuit proof and reverse polarity protected. - Unit comes standard with electronic lockout and brownout circuits - Sealed dust-proof transfer relay, test switch and LED indicator lights - Long-life, maintenance-free sealed lead acid battery - NEXUS compatible (for more information on NEXUS, please consult your sales representative) - CSA C22.2 No. 141 certified - Standard 120/347 VAC input with line cord kit