... to resonance, and worse more, its damping oil will leak, as a result, its lifetime is reduced dramatically. Using ... it almost eliminates the fatal oil leakage and a long life time is accomplished. Besides, WX-DC-01 ... 11VDC to 15VDC, and even can work for a while as high as 100V without damage, which ... assured; it can work higher than 15V for a while without damage, but the voltage variance should ...