Coil terminal with DC specification has polar indicator lights, thus when wiring, notice positive and negative poles, ''1'' shall be connected topositive pole, ''2'' to negative pole. If the poles are connected inversely, the indicator lights will not shine but valve still actuates.
I Pneulic Industries Supply Sdn BhdHydraulic Equipment Supplier Malaysia, Pneumatic System, Industrial Hoses Supplies Perak ~ I Pneulic Industries Supply Sdn Bhd