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The Song Chuan 871-1C-S-R1-12VDC is a heavy-duty SPDT automotive relay in a compact DIP5 package. Designed for 12V DC systems, it features a 12V coil (123, 1.2W) and robust silver tin oxide (AgSnO) contacts rated 35A NO / 20A NC at 14VDC. The integrated resistor absorbs coil surge voltage, safeguarding your circuitry from damage. Its plug-in design enables quick installation on PCBs or relay sockets, while the durable construction ensures up to 10 million mechanical operations. Widely used in cars, motorcycles, RVs, and industrial equipment for controlling lighting, fans, and power circuits.