KS4 is a set of SPST-NO AC output PCB mount Mini-SIP type SSR. The SSR has three DC input options 5VDC, 12VDC and 24VDC for selection and provides photoelectric isolation between the input and output and offers two alternative switching
modes: zero-cross turn-on and random turn-on, suitable for the control of electromagnetic valves, motors, electric
incandescent lamps, etc.