BillGorman wrote:Can a 2800 style tri-beam be reworked into a 2900 tri-beam?
Yes, they can be upgraded. The prestage beam sensor would be modified and re-tuned depending on the age of the unit, else the prestage beam sensor circuitry would be replaced. The sensor enclosure would be updated with the smaller openings for improved range. The stage and guard beams would be tuned and aligned for the new beam openings. and finally, the stage/guard logic board would be added with a different wiring harness.
A little involved on our end but it upgrades the older hardware at a lower cost than buying new and can be reused with a newer timer.