Six enclosure types: -Single tube: three enclosure types -Dual tube: three enclosure types Applicable lamp power Fluorescent lamps: 18W x 1, 18W x 2, 36W x 1 36W x 2, 58W x 1, 58W x 2 LED lamps: 9W x 1, 9W x 2, 18W x 1, 18W x 2 25W x 1, 25W x 2 Electronic ballast, wide voltage range, rapid starting, stable performance, power factor 0.95. Only dual tube light fittings with emergency lighting function.