HiLetgo 2pcs ACS712 30A Current Sensor Module 30A Range ACS712 Module

Functions as advertised.

These worked well with my arduino project. I was able to get good consistent readings once it was programed. I have been using this continually for 6 months with no issues.

These work great and came so fast i was surprised by the delivery. Great value and awesome service, would buy again!

I purchased the 30amp module for a project that would draw 15 amps. Being a 30amp capable module, I thought the terminals would have a rating near 30amps. However, the part I received had blue screw terminals that looked to only accept 18 gauge wire. Looking closer, the amp rating on the side of the blue screw terminal. Showed a 10Amp rating. How in the world would they sell at 30amp capable device with a 10amp screw terminal?? Seems like a hazard amd a pretty big point of failure. Would not purchase again!

These are cool products but seriously they got really small and there is no way to safely attached wire sized properly for even 20 amp ac 14g let alone 12g for up to 30 amp ac. But again for smaller current requirements and learning/experimemting these are awesome.

For Arduino Uno or other boards these sensors come in very handy for monitoring AC or DC current. I have used these off and on for the past 2-3 years and I have purchased more than 15 over that period of time. After you get the hang of programming you start coming up with more ideas of where this can come in handy to know if you need to know if something is running, for how long, if it is on maybe you use that information to trigger something else. Which is the basics for any sensor you may have a need to monitor. All I can say is this sensor works very well and they are all basically the same as this comes in three different Current ranges (5, 20 or 30 amps) you just use a different constant in for program depending on which one you use.

See my review of the 5 Amp version. All apply except the sensitivity is typically 66mV/Amp meaning an even tighter 8 bit resolution for the Adurino type of microprocessor. It may give false current readings. The biggest disappointment not mentioned in my 5 Amp version, is there is no way to mount the units to a chassis. No mounting holes (though some do have with an extremely small metric screw) on the pc board and no sure way of drilling them without damaging traces or shorting between traces. Special mounts have to be designed and built for these units.

as with most electronics from amazon there is a lack of documentation, but then adding the paper would increase the price