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Chip: ACS712ELC-05B
Supply power: 5V
Measuring range: 5A
Analog output: 185 mv/A
When there is no the detection current through, the output voltage is VCC / 2
PCB board dimension:31x13mm Package Contents:
5x5A range ACS712 current sensor module
SWH
Reviewed in the United States on March 5, 2025
Not designed for the rated amperage. Screw down terminals are tiny, they won't even allow a 18 AWG solid core wire.
Kwinten Hale
Reviewed in the United States on October 14, 2023
I purchased these to use on my college senior project to read dc current of motors on a robot. They are working great so far hooked up to an Arduino and displaying the results on an OLED display.
Steve M.
Reviewed in the United States on February 28, 2021
A powerful stabilizer algorithm is needed as the numbers jump all over the place, just as sloppy measuring DC as well as AC.Mfr should make a board-only version or versions with 4 units per board, NO screw terminals or DIP pins, let the DIY work that part out.
jlkidder
Reviewed in the United States on October 30, 2019
Ok, not very accurate and connectors too small for 30amp DC 12v wiring
johnjohn5578
Reviewed in the United States on September 1, 2017
One of the items came broken, but the other 4 do what they are supposed to do.
Permelia
Reviewed in the United States on August 18, 2017
Works Great! I use them to monitor the current of the motors of the stabilizers on my travel trailer so my controller knows when to stop when the current draw increases when fully extended or retracted. Voltage output adjusts above and below a center value (about 2v) based on positive or negative current, so you know how much current is being drawn and what direction the motor is turning at the same time.
C. Yang
Reviewed in the United States on July 28, 2017
These work perfectly as advertised and are very well priced. Be aware that because these are analog sensors, you will probably want to use an averaging For loop in your code to use these with, otherwise your values are going to be jumpy. Look up 'ACS712 code' on Google and you will find many Arduino sketches available (I'm using parts from Elecrow's website).My main annoyance is that these do not have any obvious way of screw-mounting, which is important as any connected wires could be taking up to 20 amps- meaning something like 12 gauge wire is used, thick and heavy to impose quite a load on the board. There are other versions that do come with screw mounting holes, or you can (very delicately and carefully) drill your own on either side of the chip.
Warren
Reviewed in the United States on October 17, 2017
Works good, but the precision isn't as good as I had hoped with reading with an Arduino. I can only get 12 bit precision when measuring the voltage, which is several hundred milliamps per division. If you need precise measurements, you need a different device.
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