Features:Waterproof, Heatproof, Shockproof, Anti-Electronic Interference and Constant Power OutputBest use for big vehicle such as truck, tractor, bus,trailer, offroad, , 4WD, big automotive, engineering use.Not suitable for car, motorcycle.Specification:Housing color: blackMaterial: aluminum shellInput Voltage Range: 9-18V DCNormal input Voltage: 12V DCOutput Voltage: ACMax. start voltage: 23KVCool staring current: less than 10A MAXNormal input current: . 8.5 AOutput Power: 100W ( A theoretical Max. rated wattage)Output Voltage: 70-140V AC True RMS Square WaveOperating Temperature: -40 to +105 degreeEfficiency: 87% With input 13.2V DC ConditionPackage Contents:1 * ballast1 * boxOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.