E105SYZQE is a sealed miniature toggle switch featuring a single-pole momentary-off-momentary (Mom-Off-Mom) switching function, designed for applications requiring reliable contact actuation in harsh environments. The switch incorporates an epoxy seal to protect against solder and cleaning process contaminants, with a UL 94V-0 nylon case and bushing for enhanced durability. It features a 0.500-inch high actuator with a threaded bushing (Y option), solder lug termination (Z option), and gold contact material (B option), delivering contact resistance below 10 mO typical at 2-4 V DC with 100 mA. The switch is rated for 7.5 amperes at 125 V AC or 28 V DC, with an electrical life of 40,000 make-and-break cycles at full load, and provides 1000 Vrms minimum dielectric strength. Ideal for telecommunications, instrumentation, and medical equipment applications where sealed, reliable switching performance is essential.