The AML21CBA3BA is a momentary action, 1-pole pushbutton switch housing from the AML21 series. It features a square housing designed for a single lamp circuit, though this model comes with no lamp installed. The switch utilizes gold contacts for reliable low-energy switching and has .025 x .025 inch terminals compatible with printed circuit boards or push-on connectors. This model is configured with a standard black bezel and provides momentary, 1-pole double-throw (1PDT) circuitry. As part of the versatile AML series, the independent lamp and switch circuits offer design flexibility for various electronic control panel applications.