Elk M1 and GRI-2600 water sensor alternative


Active Member
So - was curious for a good alternative to the GRI water sensors that meld well with ELK zones.
Can't find the 2600's and when I do find somewhere that thinks they "have them" - they don't. Last attempt was J**C who promptly charged my card / then 4 weeks later - have pretty much ghosted me. They are a mess - used to be reliable.
The 2600's were good for my need - the ELK zone is setup nicely for me with definition of Zone type 16, normally closed. 
Any recommendations for a more readily available, reliable sensor that will setup as a simple zone on the ELK?