A&M Systems K9129 Universal Door Control Module Kit | Replaces AT-CSR-040, AT-CSR-048 & P100631 | Current Sensing Logic (No Limit Switches) | Fits Starcraft, Glaval & ElDorado Bus

The Last Door Control Module You Will Need.The A&M Systems K9129 is the universal problem-solver for electric shuttle bus doors. Whether you are replacing a burnt-out AT-CSR-040 or upgrading an ancient Model 2853, this kit brings your door system up to modern standards.Why Upgrade to K9129? 1. Current Sensing: It stops the door by reading motor amperage spikes, not by hitting a fragile switch. 2. Auto-Reopen: If the door hits a passenger, the board senses the obstruction and reverses immediately. 3. Moisture Proof: The "Potted" epoxy design prevents the corrosion that kills most door boards.This Kit Replaces ALL of the following Part Numbers: AT-Series: AT-CSR-040, AT-CSR-048, AT-CSR-049 P-Series: P100631, P100289, P100371, P100546 Legacy Models: 2853, 2899, 3056, 3131, 3137, 3149, 3185, 3193, 3198, 3199, 3201, 3230, 3333, 3528, 3556 Bus OEM P/N: Starcraft 0029581-20, 19-010-007Installation Note: This kit includes adapter harnesses because the pin locations on this new board may differ from your old unit. You MUST use the included harnesses to ensure proper function.

• THE "MASTER" REPLACEMENT KIT: The K9129 is the latest "Universal" update from A&M Systems. It replaces virtually ALL previous door control modules, including AT-CSR-040, AT-CSR-048, P100631, and older series (2853, 3131, 3333). If you have an electric A&M door, this is the board you need.
• CURRENT SENSING LOGIC (NO LIMIT SWITCHES): Features advanced "Amperage Detection" technology. The board senses when the door hits the open/close stop or an obstruction and cuts power automatically. This eliminates the need for troublesome mechanical limit switches that wear out.
• COMPLETE RETROFIT KIT: Includes the updated P100631/P115384 Control Board AND specific adapter wiring harnesses. These adapters allow you to plug this modern board into older bus wiring harnesses even if the original pinout locations were different.
• WATERPROOF & VIBRATION PROOF: The printed circuit board (PCB) is fully potted in a thick Epoxy Resin. This "Black Box" design makes it impervious to the water leaks and road vibration that destroy standard open-circuit boards in the door header.
• FLEET COMPATIBILITY: Standard equipment on major shuttle buses including Starcraft Allstar, Glaval Universal, ElDorado Aerotech, Goshen Coach, and Champion Challenger using A&M "Rotary" or "Linear" electric actuators.