... L,H4 (H/L),9004,9005,9006,9007,9004/H.9004/L,9004(H/L),9006(H/L),9007/H,9007/L,9007(H/L ... , long lifespan, and low defect rate(<1%).6,Stable output frequency without Hertzian waves.7,Self- ... 16V open 9,Under-Voltage protection:lower than 6.5V closed,higher than 8.5Vopen10,Short-Circuit ... Over voltage protection test. 5) Flash light concussion test. 6) Quakeproof capability test. 7) Cold & warm boot test. ...