611t

There were actually two different versions of the 611T. I say WERE because I believe that they're both now discontinued. Both were latching relays. What this means is that the relays never had any current draw other then when you triggered it. You trigger it once, the relay would 'latch' closed. You trigger it again, it would 'unlatch'. Again, in both instances the relay would not need any power to remain latched or 'unlatched'. Regarding the two types. The one that Big Dog mentions above was the newest version that had a built in timer that gave you the option of setting an amount of time (1-100 sec.) that the relay would stay latched. The older version was simply a straight active latching relay (without the timer feature) that would stay latched until you triggered the relay again.

Thanks...So which are better 611T or 528T( pulse timer delay)?