Broyd Posted August 10, 2013 Posted August 10, 2013 A lot has been said about this sensor, and from all of the posts in this forum discussing it's operation, I understand it pretty well. But I have one question ... If a SOLID wet condition is detected, (in other words, a condition in which the conductivity of the solution is sufficient to prevent the sensor from switching between dry and wet states many times as it usually does when it is getting wet), does this sensor re-transmit a detected solid wet condition more than once (for example, every 15 minutes), or is that signal only sent once? If the signal is retransmitted, how frequently does this happen? I haven't tried this test myself yet; I thought someone here might have already done it. This question is originating from the power loss situation in which the sensor gets wet during the power loss and the ISY-994i misses the WET ON signal when it occurs. If the signal is transmitted only once, then you would have a ~24 hour wait before you could know of the wet condition, and then it could only be detected from the heartbeat signal, which would be sent as an OFF signal (rather than an ON signal, as it does when dry). Thanks for anyone's incite into this situation Best regards, Broyd.
LeeG Posted August 10, 2013 Posted August 10, 2013 "does this sensor re-transmit a detected solid wet condition more than once" The Wet node sends an On command once (assuming a SOLID Wet condition). The Heartbeat message every 24 hours also carries the current state of the Leak Sensor. Unless very unlucky and the power loss is a few minutes after the last state change, it is likely less than 24 hours but it is true that the next opportunity for a Wet indication is the Heartbeat message. Being a battery powered device the Leak Sensor cannot be queried when power is restored.
Broyd Posted August 10, 2013 Author Posted August 10, 2013 Thanks LeeG! That has finally put the last of the pieces of this puzzle into place. Best regards, Broyd.
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