Pilot Lights, XB4-B Direct supply type will require separate purchase of appropriate BA9s incandescent lamp, neon or LED Transformer types are supplied complete with BA9s incandescent LED types are complete with integral LED light block Group and Category: 112 D-EX tD A21 Certificate No. INERIS 04 ATEX 9004U Note Manufacturers part number with EX denotation indicates EX rated product Schneider Electric ZB4-B & XB4-B Harmony® 22mm Range