Koolertron 0/4-20mA DC 0-10V Signal Generator,2-IN-1Portable Mini Function Generator Built-in 1000mAh Rechargeable Battery,Analog Generator with 4-Digit LCD Display,Accuracy 0.01,for PLC/Panel Testing

This is a great tool for signal testing. Easy to use and works good

Great little testers for 4 to 20ma.

I used this to send a 0-10v signal to some DC fans on our fan-assisted heating and cooling products in our design studio. This helps to simulate a BackNet or Building Management System which would utilize a 0-10v signal to control fan speed, as opposed to our other automated control options. We may need to get more of these so we can take them to job sites and demo / troubleshoot our fans. I hardly know anything about electrical, but I figured this out on the first go. Does exactly what we hoped it would.

Works great for bench or stand alone 4-20mA testing of valve positioners and other DCS inputs