The Y101136B203NG is a 4-tumbler keyed switchlock with detent and anti-static switch designed for secure access control in point-of-sale terminals, cash registers, and computers. It features 90° indexing with key pull positions at 1 and 2, and is equipped with a stainless steel lock finish and solder lug with notch termination (01). The switchlock exceeds 20 kV DC static resistance at sea level between lock body and terminals, providing robust anti-static protection. It is rated for 4 amps at 125 V AC or 28 V DC, with an electrical life of 10,000 make-and-break cycles at full load and contact resistance below 10 mO typical. The device includes two nickel-plated brass keys and is mounted with a nut (N option) for panel thicknesses of 0.085–0.105 inches, making it suitable for applications requiring secure keyed access with reliable electrical performance.