The E112SD1A3QE is a sealed momentary pushbutton switch featuring SPDT (Single Pole Double Throw) functionality with right-angle PC thru-hole termination and snap-in capability. It incorporates gold-plated copper alloy contacts and terminals, providing reliable low-level/dry circuit operation at 0.4 VA maximum at 20 V AC or DC. The switch is process sealed to withstand machine soldering temperatures and pressure wash cleaning methods, with an epoxy seal rated at 0.075 inches maximum. Operating over a temperature range of -30°C to 75°C, the device delivers contact resistance below 20 mO typical at 2–4 V DC with 100 mA, and maintains insulation resistance of 10? O minimum with 1000 Vrms dielectric strength. This sealed design with long-life contact geometry and 40,000 electrical life cycles makes it ideal for instrumentation, telecommunications, networking equipment, and computer peripherals requiring robust, maintenance-free switching performance.