... damped oscillation, high-voltage pulse, voltage fluctuation, surge voltage, harmonic distortion, clutter immunity, and frequency fluctuation etc., delivering ... . Dust-proof Kit: Increases the dust-proof level in industrial environment. Isolating Transformer: offer isolation ... FaultAcoustic noiseAt 1 meter distance<55dB<60dBCommunicationsIntelligent RS232 serial portWindows 98/NT/2000/XP/2003, Linux, ...