Your right, Trombetta is the brand name (that is why it is capitalized). (I am on first name basis with one of its reps over the Trombetta/BIRD issue some of us had - not that that makes me happy!) Thor calls the Trombetta an "isolator relay" in their wiring diagram and the BIRD is a "Bi-Directional Isolator Relay Delay". If you have been reading the forum, we have been discussing this issue for the past month or so, using Trombetta and BIRD, and I did not want to confuse people any more.
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