The E121SD1AGE is a snap-acting momentary pushbutton switch from the E020 series, featuring an SPDT On-Mom function. It is designed with gold over silver contacts, offering a dual contact rating for power applications up to 1 amp at 120V AC or 28V DC, and for low-level circuits at 0.4 VA maximum at 20V AC or DC. The switch is process sealed with an epoxy terminal seal and a disposable boot, ensuring it withstands soldering and cleaning. With a long electrical life of 60,000 cycles, this RoHS compliant switch is ideal for applications in instrumentation, telecommunications, networking equipment, and computer peripherals.