... conformity to EN & IEC standards BAY51 series explosion-proof light fittings for fluorescent lamp 1)Explosion protection to-CENELEC-IEC-NEC2)Can be used ... 1, 18W x 2, 36W x 2, 58W x 2.LED lamps: 9W x 1, 9W x 2, 18W x 1 ... effect protection.9)Only fluorescent lamp with emergency lighting function, LED lamp without such function.