Thanks for those ideas. I tethered the remote directly to the TIU with the single 3 foot test track only connected to the TIU. The TIU still takes 10 to 20 seconds to respond to handheld. I tried "read" per your good suggestion, the TIU only has one address in use. Could the TIU be stuck on some sort of memory loop? Again, it has been reset. WE've eliminated the remotes. Your ideas appreciated.
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