The E112SD1CQE is a sealed momentary pushbutton switch featuring SPDT (Single Pole Double Throw) functionality with silver-plated contacts and copper alloy terminals. It is rated for 4 amps at 125V AC or 28V DC with an electrical life of 40,000 make-and-break cycles at full load and contact resistance below 20 mO typical. The switch operates over a temperature range of -30°C to 75°C with an insulation resistance of 10?O minimum and dielectric strength of 1000 Vrms minimum at sea level. The device features an epoxy seal for process sealing to withstand machine soldering temperatures and pressure wash cleaning methods, making it ideal for instrumentation, telecommunications, networking equipment, and computer peripherals where reliable sealed switching is required.