I am trying to add a PIR detector to a drinking fountain for my cat. I found a great little module here: http://www.glolab.com/dp-003A/dp-003A.html
The fountain comes with a 12V adapter that I assumed was DC out, but the specs on the pump say it runs on 12V AC, so now (I'm not somewhere that I can verify on the plug) I'm thinking it is merely a step-down so it will output 12V AC. Th PIR module will run off this and has a dedicated realy output port to switch on a relay, but after hours of searching, I'm starting to pull my hair out figuring out what type of relay to use. I plan to simply split the 12V in and run it to the PIR module and the NO terminal of a relay. What am I missing?
The fountain comes with a 12V adapter that I assumed was DC out, but the specs on the pump say it runs on 12V AC, so now (I'm not somewhere that I can verify on the plug) I'm thinking it is merely a step-down so it will output 12V AC. Th PIR module will run off this and has a dedicated realy output port to switch on a relay, but after hours of searching, I'm starting to pull my hair out figuring out what type of relay to use. I plan to simply split the 12V in and run it to the PIR module and the NO terminal of a relay. What am I missing?
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