A105SYZQ04 is a single-pole double-throw (SPDT) toggle switch from the Alcoswitch Gemini Series, designed for vertical mounting with wire lug terminals and a long bat actuator. The switch features silver contacts with a contact rating of 2 A at 250 VAC or 5 A at 125 VAC, and 2 A at 30 VDC, providing reliable electrical performance across multiple voltage and current levels. The switch incorporates a machined brass toggle with heavy nickel plating, a rigid one-piece die-cast frame with copper flash and heavy nickel plating, and epoxy-sealed terminals for environmental protection. With an insulation resistance of 1,000 megohms minimum at 500 VDC, dielectric strength of 1,000 volts RMS, and electrical life up to 30,000 cycles, this switch is well-suited for industrial control applications, instrumentation panels, and equipment requiring durable switching functionality in temperature ranges from -20°C to +85°C.