Riiai Upgraded 4-20mA 0-24V Current Signal Generator, Current Voltage Adjustable Analog Simulator, Real-time Curve, Multiple Signal Types, 3000mAh USB Rechargeable, Preset Value, for PLC Testing

This little thing is absolutely incredible. If I can find a use for it will be buying the higher end one too that can emulate thermocouples.The manual is helpful if you are REALLY good at reading manuals. Otherwise, there are loads of YouTube videos online. I really realized how good this thing is when I was using a $4k fluke process meter to calibrate it. I could only get the calibration to 0.005, but I’m fine with that. The big thing is this can put out an actual 24vdc (even up to 25vdc!) and the $4k process meter can only do ~20vdc. I had to set up a 24v power supply (measured to 24v exact) to calibrate that input.The 0-20mA is just as good!

Very compact and powerful. Hard to learn to operate. Have not found a good video.

Got this for work.. Took a few to figure out the settings, but once that hurdle was crossed it works good.

When I first looked at the Signal Generator, I was amazed how small it was, I’m used to working with much larger units. But the number of features and functionality was amazing. So don’t let the size fool you. Took a bit getting use to, like any fine instrument, but with the help of a well-defined manual, all worked out fine. I can go on about this product how impressed I am with features, just look at the vendors description, it’s spot on.

It's great to be able to see what the customer is actually sending AND inject the correct signal simultaneously.

Returned. It was not worth the effort to figure it out, and I make my living figuring things like this out. I have used many simulators over my career, and when I had given up on this one, I borrowed one that was another brand, which I had never used before, and it worked intuitively.Might just be a poor translation of the buttons labels and manuals from whatever language was used to develop it.I really wanted it to work.

It works as described. The rechargeable battery is fairly large, so the device runs a long time. Everything you need to use it is in the box.Like many electronics, they've added more features than most people need, which complicates the useability of the SG-003A device. The manual describes the features, but not how to actually use the product. I've used it for a day, and figured out what I needed to make it work. I wanted a 4 to 20 milliamp generator, and it does that. The mA output tends to be a bit low (20 mA out is about 19.8 actual).The "FN" button is important. Out of the box, the device booted up in trend mode ("Curve" mode). FN, then Curve toggles the display between trend mode and character mode. Character mode is simpler.

When it comes to testing electronic circuits or troubleshooting electrical systems, having a reliable and precise current signal generator is essential. Enter the Current Signal Generator—an indispensable tool that met my expectations. This unit allows you to supply a signal and test a sensor simultaneously.