The OKY3012-4 from OKYSTAR is a general purpose plug-in relay module with two channels, rated for 5VDC, a maximum of 250VAC, 10A, and 45x40x19mm. It has two mechanically operated switch contacts in an enclosed plastic case, and provides an insulation reinforced construction for general use in switching applications. This product provides simple switching between two circuits while reducing electrical noise by means of mechanical contacts. It can be used in a variety of applications such as industrial automation, automotive, telecommunications, and home appliance control.