Multi Plex Lighting System - problem

I am able to fix the Multi Plex lighting problem by replacing the bedroom keypad. DRV was unable to help as they no longer stock parts for my 6-year-old trailer. They suggested I contact Firefly Integrations in Middlebury, IN. Phone number 574-825-4600. The Firefly tech support people were very helpful. They identified the keypad from part numbers and a photo of the keypad that I sent to them. The keypad which is really a switch is specific to each location inside the trailer. The cost was $150 plus $35 core charge which is refunded when I send them the bad keypad.