I'd like to have a number coded keypad on my workshop/garage, which is a separate building from my house. It's all controlled by an ELK M1G system. I was wondering if someone had a suggestion for a numeric keypad to open the garage door. I would like one that is a "scramblepad" style, where the numbers appear in random order with viewing restrictions. However, the hirsch scramblepad example I believe only connects to a Digi*Trac. Anyone aware of a similar style device that could be connected to the elk?