LFI Lights - UL Certified - Hardwired Green LED Standard Exit Sign - Battery Backup Emergency Lighting - LEDGBB Meets or exceeds UL924 (21 separate tests), NEC, OSHA & NFPA 101 Life Safety Code requirements 120 or 277 VAC operation njection-molded, VO flame retardant, high impact housing Universal mounting canopy for top or side installation Push-to-test switch