The AML27ABK2AC23BA is a non-lighted electronic control keylock switch from the AML27 series. It is configured with a square housing, a black bezel, and utilizes .110 x .020 inch solder or quick-connect terminals. This switch provides 2-pole, double-throw circuitry with silver contacts and a 3-position operating action: momentary in the clockwise position, maintained in the center, and no action in the counter-clockwise position. The key is removable only in the center position, making it suitable for applications requiring controlled access, such as computer peripherals, point-of-sale terminals, and security systems.