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listing includes 2 pieces of high-current T90 (SLA series) relay modules designed for DIY electronic circuits and automation control. Supporting input voltages of 5V, 9V, 12V, 24V, and 48VDC, these relays feature a 30A high-current rating for reliable switching of heavy loads. Available in 4-pin, 5-pin, and 6-pin configurations, they provide flexible wiring for various circuit designs. The robust construction ensures stable performance, low contact resistance, and long service life. Perfect for Arduino projects, smart home control, automotive circuits, industrial control, power switches, and other high-power DIY applications.