LFI Lights - UL Certified &ndash; Hardwired Green LED Emergency Exit Sign - Modern Design - Battery Backup - LEDGBBJR Meets or exceeds UL924 (21 separate tests), NEC, OSHA & NFPA 101 Life Safety Code requirements Long life, energy saving LED lamps Injection-molded, VO flame retardant, high impact housing Universal mounting canopy for top or side installation Charge rate / power on LED indicator light with push-to-test switch