Didn't work for my application, but good product and support
For 8 ch Opto Isolator board 5-24VDC in 3.3-5VDC out
I purchased this board to monitor the HVAC in my house using a raspberry pi. Unfortunately, not all of the inputs I wanted to monitor share a common/ground, so this board didn't end up working for my application. I had excellent response time from both Benjamin and Eric when I reached out with questions. Benjamin was willing to setup an RMA as soon as I requested a return.
