WCS1800 Hall Current Sensor Detector 35A Current Sensor Module Board Short Circuit Overcurrent Protection Module Sensor with Overcurrent Lamp

This module worked well compared to another I purchased from Adafruit. The Adafruit module was DOA and I ended up throwing away 3 units. I couldn't get customer support because no one at the company knew anything.

Need stable 5.0Vdc Because it uses as reference for comparator circuit

I use it to detect when the sump pump switches on and off - draws current or not. Works with both 3.3 and 5 volt supply - the data sheets confirm this. Took me some time fiddling with the potentiometer to get it how I wanted it. And still I couldn't get the digital output to a proper "1" level. So I wired it to the analog input of my ESP8266, and was able to detect current reliably that way. Didn't bother with the analog output of the device (AOUT) at all.

Cheap? You bet. Will it take a LOT of averaging to get a good signal? You bet.