The HFD3/012 is a compact, 12 V DC subminiature signal relay by Hongfa, featuring a DPDT (double pole, double throw) contact configuration and reliable switching up to 2 A. Designed for PCB mounting with through-hole pins, this versatile relay is ideal for control boards, automation modules, telecommunication interfaces, and general electronic switching applications. Its robust construction and wide operating range make it a dependable choice for repairs and new designs.