4-20mA Signal Generator for Precise Current Loop Calibration, Adjustable 3-21mA DC Analog Simulator for Two-Wire Transducers, Industrial PLC and Sensor Debugging, Pinpoint 0.01 Display Accuracy for Reliable Diagnostics

Single-Unit 4-20mA Signal Generator for Accurate Calibration
✔️ 0.01 display precision, 4-20mA & 3-21mA ranges, two-wire

The JS-420ISG-V2 is a precision two-wire current loop signal generator designed for electronics hobbyists, educators, students, and makers who need a reliable current source for testing and experimentation. It's a handy tool on lab benches, classrooms, and field service where accurate current loop simulation matters for sensors and PLC I/O validation.

✅ Display resolution: 0.01 mA
✅ Output ranges: 4-20 mA and 3-21 mA
✅ Non-polarity two-wire terminals for quick hookup
✅ Rotary encoder for smooth, precise adjustment
✅ Programmable presets: up to 9 with auto/manual save
✅ Glare-free LCD for on-site visibility

💡 What is a 4-20mA current loop signal generator used for in industrial diagnostics? Here’s a handy guide.
- precise current source for calibrating two-wire transmitters and sensors
- supports 4-20mA and 3-21mA for flexible testing
- non-polarized terminals and linear output alignment for easy setup
- programmable presets with auto/manual save for repetitive testing