Re: installed new alarm siren and no chirp or alarm
OK so I answered my own question, was able to just pull the module out of the (wet) foam case. this is where I am pretty sure it is toast, but maybe the terminals are corroded and with cleaning??
So first I pulled out the clip that holds the manifold on the module with a small screwdriver to pry. It just slides straight out then you can pull the manifold up and off. First & second photo
Then I started with the white connectors which have a three part release; push down white tab, then grey lever to horizontal, and then pull out connector. third photo
You can plainly see where it was shorting out due to the water. this connection was the lowest and closest to the pool. fourth & fifth photo
At this point I don't know whether to just buy or try and clean the terminals to see if it still works.
Last photo is part number