The 8121SYZGE is a snap-acting momentary pushbutton switch from the 8020 series, featuring a Single Pole, Double Throw (SPDT) On-Momentary circuit. It is designed with gold over silver contacts, providing a contact rating of 1 Amp at 120V AC or 28V DC. The switch has a plunger actuator, a 0.350-inch high keyway bushing, and solder lug terminations. It offers an electrical life of 60,000 cycles at full load and operates in temperatures from -30°C to 75°C. With its epoxy terminal seal for compatibility with bottom-wash cleaning, this switch is ideal for instrumentation, computer peripherals, and telecommunications equipment.