1.Internatonal standard: IEC 2.Authoritative certificate:CCC, CE,EU, TUV & ROHS 3.Rated ... for electrocar, low voltage converter, engineering machinery and otheruse of DC power occasion.2. Structure featureAction agency is directly operated type, contact ... product with good shock resistance;coil instant power on when need movement, doesn't need power on when normal maintain,coil energy ...