The HFD41/012-HS3 relay is a general-purpose, through-hole relay manufactured by Hongfa. It is a single pole double throw (SPDT) relay, rated for up to 5 Amps, and is designed to operate at 12VDC. Additionally, this relay is rated for up to 240VAC or 30VDC maximum load. The relay is RoHS-compliant and meets UL, CUL, and other relevant safety standards.