Adams Elevator Equipment D455A-4 Push Button Assembly

Adams Elevator Equipment D455A-4 Push Button Assembly is a replacement push-button module for Adams elevator fixtures, delivering a dedicated #4 push button with a clear 1/8-inch-high button cap. It is listed in Adams’ official fixture catalog as part of the D455 family, with related variants such as the D455H1, indicating a shared design lineage and mounting footprint. This compact assembly is intended for retrofit or replacement when a legacy Adams call button wears or fails, helping maintain reliable signaling for hall or cab calls in Adams elevator systems. The D455A-4's design centers on a front-interface button and corresponding internal actuator mechanism that aligns with Adams’ switch wiring and faceplate configurations, enabling straightforward installation without custom fabrication. By sourcing the exact D455A-4 model, technicians preserve the original form factor and electrical interface used by Adams controls, ensuring consistent operation with existing cabling and control blocks. Official Adams documentation confirms the D455A-4 as a genuine component within the D455 series, supporting serviceability and inventory compatibility for building maintenance programs.