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This listing includes 1 piece of 6-pin power relay with models YYH4100-DC12V-SH, YYH4100-DC5V-SH and YYH4100-SH-112LZ, belonging to the 4100 series. It supports 5V and 12V DC voltage with 3A to 5A load capability, widely used in small appliances, smart control modules, security equipment and DIY electronic circuits. Each relay is strictly tested to ensure stable and safe operation.