The replacement remote transmitter for Crimestopper’s On Guard model CS-2200WST aftermarket alarm system has been discontinued by the manufacturer. This 2-button part has FCC ID OBDT23 and Crimestopper part number CS-322. It also replaces Crimestopper part number CS-321. The RUI part number is 639-1639.
The part has been discontinued, but RUI still has a limited quantity in stock. If you have this alarm system, you may want to think about buying a replacement keyfob now while they are still available.