I just ordered " 1-Channel General Purpose SPDT Relay Shield + 7 GPIO with IoT Interface - [10 Am](calendar:T1:10 Am)p SPDT"
I found an old video and it seems that it will work with IFTTT to send email and or text alerts.
What i am trying to do is monitor differential pressure (inches of water column). And set a trigger point. When the differential pressure reaches a certain point, it will send an alert. I saw there is several different products available on the site that monitor pressure but it doesnt look like any monitor inches of water. I found a belimo pressure sensor that outputs 0-10 vdc. I was considering purchasing the belimo. But then i need another control that will close when the correct VDC signal is sent from the belimo which will then trigger the " 1-Channel General Purpose SPDT Relay Shield + 7 GPIO with IoT Interface - [10 Am](calendar:T1:10 Am)p SPDT". Are there any products that you would recommend or an easier way to do this. I like the belimo because it is autozeroing and is +/- .02" accuracy but I am open to other equally accurate products. Ultimately I would like to he able to monitor the pressure remotely and receive alerts at a customizable trigger point. This is my first attempt at building something like this so bare with my inexperience.