› M1 Support Forum › Issue with “water alarm” zone configured as “type 1” (NC) › Reply To: Issue with “water alarm” zone configured as “type 1” (NC)
April 13, 2026 at 12:49 pm
#10195
Marko Vulovic
Hi Brad. Thanks for your response.
The water sensor I am using is the GRI 2600, which is a very common, NC sensor. Unfortunately I cannot change that. But I realized that even in mode 1 it’s expecting a parallel 2.2kOhm EOL resistor and was treating the open condition as a trouble state. Rookie move on my part. I added the parallel resistor and it’s working as expected now.