L102021ML04Q is a miniature right-angle PC thru-hole slide switch featuring single-pole double-throw (SPDT) functionality with horizontal actuation. The switch is constructed with a 6/6 nylon housing (UL94V-2) and includes silver-plated copper contacts rated for 4 amps at 125 V AC or 28 V DC, with contact resistance below 10 mO typical. It operates reliably over a temperature range of -30°C to +65°C and provides 10,000 electrical life cycles at full load, with dielectric strength of 1,000 Vrms minimum. The switch features positive detent operation, enclosed housing design, and is RoHS compliant, making it suitable for communications equipment, lighting devices, and other applications requiring compact, reliable switching in space-constrained environments.