The OKY3011-8 is a single channel relay module manufactured by OKYSTAR. It has a 5VDC power supply and can switch up to 250VAC and 10A. It is typically used for switching induction loads, resistive loads, signal transmission, and other industrial automation applications. The module is equipped with an LED indicator to display the switching status, and has protection functions against overcurrent, overheat, and short circuit. It is equipped with an 8-pin plug base, which can be easily mounted on a DIN rail or panel.