---
product_id: 453390636
title: "SG-003A 4-20mA 0-24V Signal Generator Adjustable Voltage and Current Simulator Process Control Signal Calibrator"
brand: "ankong"
price: "S/.401"
currency: PEN
in_stock: true
reviews_count: 7
category: "Ankong"
url: https://www.desertcart.pe/products/453390636-sg-003a-4-20ma-0-24v-signal-generator-adjustable-voltage
store_origin: PE
region: Peru
---

# 0.32W ultra-low power 240x320 TFT color LCD 3000mAh long-life battery SG-003A 4-20mA 0-24V Signal Generator Adjustable Voltage and Current Simulator Process Control Signal Calibrator

**Brand:** ankong
**Price:** S/.401
**Availability:** ✅ In Stock

## Summary

> ⚙️ Elevate your process control game with precision and power in your palm!

## Quick Answers

- **What is this?** SG-003A 4-20mA 0-24V Signal Generator Adjustable Voltage and Current Simulator Process Control Signal Calibrator by ankong
- **How much does it cost?** S/.401 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/453390636-sg-003a-4-20ma-0-24v-signal-generator-adjustable-voltage)

## Best For

- ankong enthusiasts

## Why This Product

- Trusted ankong brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Real-Time Monitoring:** Track voltage and current changes live with 10fps graphing—stay ahead with instant feedback.
- • **All-Day Power, Anywhere:** 3000mAh lithium battery with Type-C fast charging keeps you working through long shifts and late nights.
- • **Precision that Pays Off:** Achieve ultra-stable current output with ±0.005mA accuracy—because your process deserves the best.
- • **Customizable Signal Output:** Set voltage/current limits and PWM frequency/duty cycle to tailor signals exactly to your industrial needs.
- • **Visual Clarity Meets Control:** High-definition TFT color LCD with adjustable backlight ensures effortless reading in any lighting condition.

## Overview

The ANKONG SG-003A is a compact, high-precision 4-20mA and 0-24V signal generator and calibrator designed for industrial process control. Featuring a 3000mAh rechargeable lithium battery with Type-C charging, a vivid 240x320 TFT color LCD with adjustable backlight, and ultra-low power consumption (0.32W max), it offers customizable voltage/current outputs including PWM signals and real-time graphical monitoring. Ideal for PLC debugging, instrumentation, and electric valve calibration, it delivers professional-grade accuracy and stability in a portable form factor.

## Description

ANKONG SG-003A 4-20mA 0-24V Signal Generator Adjustable Voltage and Current Simulator Process Control Signal Calibrator: desertcart.com: Industrial & Scientific

Review: Cumple con lo ofrecido - Excelente
Review: Good performance for cost, more accurate than the specs, but Great Snoozin' Cthulhu, that UI! - Bought this as a short term stop-gap because my Fluke 787's current output decided to fail, so while that's getting repaired, I wanted this device to handle some cal/check stuff in the meantime. The good: Very accurate - I mean surprisingly so. Using a 6-1/2 digit benchtop DMM the overall accuracy was within 0.005mA out of the box. Very stable : with the mA output set at 80%, the output was right at +/- 16.0003mA, drifting between ~16.00045mA to ~16.00013mA - which is significantly better than most of the rest of the inexpensive calibrators here. Provided *cables* were pretty decent - not great, but decent, about as good as could be expected for the unit cost. Came well packed in a well designed box with nice foam packing. The "Huh?" - It arrived completely discharged: dead, dead deadski on the battery. Charged for ~4 hours & the indicator light went out *without* turning green. Unplugged/replugged the USB input, and charged for about another 15-20 minutes... and went out again. Repeated that & on the 3rd cycle it went green. So be patient if yours is completely discharged. The meh-bad: The USB charger is European pin style AC connection, so useless for me. The current output requires at least a fair few ohms to function - it will show "OC" if the current loop load is open or directly shorted (i.e. no load resistor) The actual bad: The user interface is about as bad as I've ever seen. Like... bad. Bad on toast. Dung-encrusted soup spoon bad. Completely non-intuitive. If you mess with it *enough*, you can get the basic functionality, and as I said earlier, it is *accurate*, and it drifts very little, but yeah... Ugh. Poor, poor design. The manual is also completely useless. In particular the fact that there are no connection diagrams at all AND there's no useful info on what does what, when... You absolutely *can* mess with it enough to eventually figure out most of it, but the combo of bad UI and bad manual doesn't do what is otherwise a solidly performing piece of kit any favors... The Modbus interface? Haven't messed with it yet, but they made some unusual choices for function codes to read/write the cal/operating parameters - they're really not well supported out in the world. Would have been *much* better to stick with function codes 3/6. All in all - because hardware wise, it truly is *very* accurate (especially for the cost), and has quite a low output drift especially for the cost, learning the goofy UI may very well be worth it - *if* you use it often enough to maintain familiarity with how it works.

## Features

- FNIRSI SG-003A signal generator is mainly used for debugging of industrial field PLC, process instrumentation, electric valve and so forth. Friendly operation interface is easy to use. it more convenient for users to operate at night and during the day.
- The FNIRSI SG-003A signal generator is small and light but has a long standby time and high precision. It is powered by a large-capacity lithium battery and is charged with a Type-c interface (5V).The capacity of the lithium battery is 3000mHA,Super long working hours,easy to carry when you go out to work.
- Adjustable button backlight and high-definition TFT color LCD screen ,the high-definition TFT color LCD screen makes the reading more eye-catching.The resolution is 240*320.Low power consumption,Maximum power consumption: 0.32W
- Voltage and current have automatic output function,it can choose a single rise,three modes of single drop and cycle. Expect with the conventional signal input and output functions,The output has a custom function,the upper and lower output limits can be set arbitrarily.PWM output can set frequency and duty cycle respectively.Voltage input diagram,current input diagram,the frame rate is 10 frames.
- With input to output conversion,voltage conversion active current mode,passive mode and current conversion voltage mode.Real-time curve:Real-time observation of changes in voltage and current

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B45VFWXY |
| Best Sellers Rank | #71,136 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #25 in Function Generators |
| Date First Available | June 15, 2022 |
| Item Weight | 1.06 pounds |
| Item model number | SG-003A |
| Manufacturer | ANKONG |
| Package Dimensions | 6.06 x 5.87 x 3.62 inches |

## Images

![SG-003A 4-20mA 0-24V Signal Generator Adjustable Voltage and Current Simulator Process Control Signal Calibrator - Image 1](https://m.media-amazon.com/images/I/718CnUQOTML.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Cumple con lo ofrecido
*by L***S on December 19, 2025*

Excelente

### ⭐⭐⭐⭐ Good performance for cost, more accurate than the specs, but Great Snoozin' Cthulhu, that UI!
*by K***S on August 19, 2025*

Bought this as a short term stop-gap because my Fluke 787's current output decided to fail, so while that's getting repaired, I wanted this device to handle some cal/check stuff in the meantime. The good: Very accurate - I mean surprisingly so. Using a 6-1/2 digit benchtop DMM the overall accuracy was within 0.005mA out of the box. Very stable : with the mA output set at 80%, the output was right at +/- 16.0003mA, drifting between ~16.00045mA to ~16.00013mA - which is significantly better than most of the rest of the inexpensive calibrators here. Provided *cables* were pretty decent - not great, but decent, about as good as could be expected for the unit cost. Came well packed in a well designed box with nice foam packing. The "Huh?" - It arrived completely discharged: dead, dead deadski on the battery. Charged for ~4 hours & the indicator light went out *without* turning green. Unplugged/replugged the USB input, and charged for about another 15-20 minutes... and went out again. Repeated that & on the 3rd cycle it went green. So be patient if yours is completely discharged. The meh-bad: The USB charger is European pin style AC connection, so useless for me. The current output requires at least a fair few ohms to function - it will show "OC" if the current loop load is open or directly shorted (i.e. no load resistor) The actual bad: The user interface is about as bad as I've ever seen. Like... bad. Bad on toast. Dung-encrusted soup spoon bad. Completely non-intuitive. If you mess with it *enough*, you can get the basic functionality, and as I said earlier, it is *accurate*, and it drifts very little, but yeah... Ugh. Poor, poor design. The manual is also completely useless. In particular the fact that there are no connection diagrams at all AND there's no useful info on what does what, when... You absolutely *can* mess with it enough to eventually figure out most of it, but the combo of bad UI and bad manual doesn't do what is otherwise a solidly performing piece of kit any favors... The Modbus interface? Haven't messed with it yet, but they made some unusual choices for function codes to read/write the cal/operating parameters - they're really not well supported out in the world. Would have been *much* better to stick with function codes 3/6. All in all - because hardware wise, it truly is *very* accurate (especially for the cost), and has quite a low output drift especially for the cost, learning the goofy UI may very well be worth it - *if* you use it often enough to maintain familiarity with how it works.

### ⭐⭐⭐⭐⭐ Excellent
*by R***L on July 4, 2025*

Excellent product

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-03-15*