---
product_id: 474164897
title: "SG004A 4-20ma 0-24V Signal Generator, Programmable Current Voltage Generator, Resistance Millivolt Thermocouple Tester, Real-time Curve, 3000mAh USB Rechargeable, for PLC Simulator"
brand: "riiai"
price: "VT70408"
currency: VUV
in_stock: true
reviews_count: 8
category: "Riiai"
url: https://www.desertcart.vu/products/474164897-sg004a-4-20ma-0-24v-signal-generator-programmable-current-voltage
store_origin: VU
region: Vanuatu
---

# 0-24V voltage output precision 0-24mA current signal resolution 0.001mA 3000mAh USB rechargeable battery SG004A 4-20ma 0-24V Signal Generator, Programmable Current Voltage Generator, Resistance Millivolt Thermocouple Tester, Real-time Curve, 3000mAh USB Rechargeable, for PLC Simulator

**Brand:** riiai
**Price:** VT70408
**Availability:** ✅ In Stock

## Summary

> ⚙️ Power Your Precision: The Signal Generator That Keeps You Ahead

## Quick Answers

- **What is this?** SG004A 4-20ma 0-24V Signal Generator, Programmable Current Voltage Generator, Resistance Millivolt Thermocouple Tester, Real-time Curve, 3000mAh USB Rechargeable, for PLC Simulator by riiai
- **How much does it cost?** VT70408 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/474164897-sg004a-4-20ma-0-24v-signal-generator-programmable-current-voltage)

## Best For

- riiai enthusiasts

## Why This Product

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

## Key Features

- • **All-Day Power & Clarity:** Robust 3000mAh rechargeable battery delivers up to 26 hours of uninterrupted use, paired with a crisp 2.4-inch TFT display for clear readings anywhere.
- • **Multi-Mode Signal Mastery:** Seamlessly switch between mA, V, Hz, resistance, and millivolt signals with ultra-fine resolution for ultimate testing versatility.
- • **Programmable Output Modes:** Customize output with auto, monotonic rise/fall, or cyclic modes—perfect for PLC debugging, servo tuning, and advanced device testing.
- • **Color-Coded Interface Terminals:** Intuitive 4-port design with distinct color rings ensures error-free connections and faster setup.
- • **Real-Time & Historical Insights:** Visualize signal trends live and access stored data effortlessly to stay ahead in diagnostics and calibration.

## Overview

The Riiai SG004A is a compact, programmable 4-20mA and 0-24V signal generator featuring multi-mode signal output, real-time curve display with historical data logging, and a user-friendly color-coded terminal interface. Powered by a 3000mAh USB rechargeable battery, it offers up to 26 hours of continuous operation and a bright 2.4-inch TFT screen. Ideal for professionals in PLC simulation, device testing, and industrial calibration, it combines precision, portability, and programmable versatility in one sleek tool.

## Description

Riiai SG004A 4-20ma 0-24V Signal Generator, Programmable Current Voltage Generator, Resistance Millivolt Thermocouple Tester, Real-time Curve, 3000mAh USB Rechargeable, for PLC Simulator: desertcart.com: Industrial & Scientific

Review: Riiai Upgraded 4-20mA 0-24V Current Signal Generator - Works easy enough and at a great price. Good portability and good battery life. Good quality.
Review: Very useful tool for work applications - This signal generator has been very helpful for my work. It’s a practical tool for testing and simulating signals, and once you understand the basics, it works very well. It’s not extremely simple to use at first, but it’s also not complicated. After a short learning curve, it becomes easy to operate and delivers reliable results. The device feels solid and performs as expected. Overall, it’s a great tool for professional or technical use. I’m very satisfied with it and would definitely recommend it to others who need a reliable signal generator.

## Features

- More Conversion Choices：Riiai 004 pocket millivolt generator can support switching more signal modes under different signal types: mA Current Signal (0 to 24 mA, resolution 0.001mA), V Voltage Signal (0 to 24V, resolution 0.001V), XMT Passive Current Signal (0 to 24mA, resolution 0.001mA), Hz Pulse Signal (Frequency Output 0 to 9999 Hz, resolution 5 digits), Resistance (0-390Ω, resolution 0.1Ω, temperature unit set to Celsius or Fahrenheit), Millivolt (-10-100mV, resolution 0.01mV)
- Real-time Curve & Historical Record： Riiai 004 model 4-20ma signal generator supports 4 groups of commonly used signal values that can be preset to facilitate quick adjustment of output. The current-voltage analog simulator is designed to automatically display the changing trend of input and output signals by the real-time curve, and the sampling time of the curve can be set. Compared with the 003 model, it supports recording and viewing a certain amount of historical data in an easier way
- Multiple Interface Terminals：The 0 to 24V DC signal generator kit adopts 4 inner diameters and 4mm wiring ports on the top surface that are represented by different color rings. The Blue port (IN-) is an alternate function, and it is also an input that can be switched to a 24V independent test power supply. The Red (OUT) port and Black (COM) port form an output port. Yellow (IN+) and Blue(IN-) form the input port. Users can choose the correct color cables and ports to start testing
- 3000 mAh USB Rechargeable & TFT Screen： With a 3000mAh 3.7V USB rechargeable battery (charged via a micro 5V USB port, the adapter is not included), the thermocouple calibrator can be fully charged within 4-6 hours, with a working time of up to 26 hours. It takes longer time to use and makes it easier to know the value changes through the clear 2.4-inch TFT screen display, and users can adjust the screen backlight according to the field
- Programmable Output & Wide Application： The 0 24v DC signal generator has the output function of auto, continuously changes the size according to the set parameters, and chooses three modes: monotonous rise, monotonous fall, and cycle. 4 groups of commonly used signal values can be preset to facilitate quick adjustment of output. It is widely used for PLC and panel debugging, device testing, frequency converter, flow valve, servo motors speed regulation, light dimmer, etc

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B8V811G6 |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Best Sellers Rank | #42,764 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #13 in Function Generators |
| Brand | Riiai |
| Color | Blue |
| Date First Available | August 6, 2022 |
| Item Weight | 5.8 ounces |
| Item dimensions L x W x H | 4.41 x 3.23 x 1.06 inches |
| Item model number | SG004 |
| Manufacturer | Riiai |
| Measurement Type | Ammeter, Voltmeter, Ohmmeter |
| Power Source | Battery Powered |
| Product Dimensions | 4.41 x 3.23 x 1.06 inches |
| Style | fashion |

## Product Details

- **Brand:** Riiai
- **Color:** Blue
- **Item Weight:** 165 Grams
- **Power Source:** Battery Powered
- **Style:** fashion

## Images

![SG004A 4-20ma 0-24V Signal Generator, Programmable Current Voltage Generator, Resistance Millivolt Thermocouple Tester, Real-time Curve, 3000mAh USB Rechargeable, for PLC Simulator - Image 1](https://m.media-amazon.com/images/I/71pNtGyBb+L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Riiai Upgraded 4-20mA 0-24V Current Signal Generator
*by S***K on December 8, 2025*

Works easy enough and at a great price. Good portability and good battery life. Good quality.

### ⭐⭐⭐⭐⭐ Very useful tool for work applications
*by G***Z on January 15, 2026*

This signal generator has been very helpful for my work. It’s a practical tool for testing and simulating signals, and once you understand the basics, it works very well. It’s not extremely simple to use at first, but it’s also not complicated. After a short learning curve, it becomes easy to operate and delivers reliable results. The device feels solid and performs as expected. Overall, it’s a great tool for professional or technical use. I’m very satisfied with it and would definitely recommend it to others who need a reliable signal generator.

### ⭐⭐⭐⭐ Powerful, hard to use.
*by S***. on May 12, 2025*

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

## Frequently Bought Together

- Riiai 4 20ma 0 24V Signal Generator, Programmable Current Voltage Generator, Resistance Millivolt Thermocouple Tester, Real-time Curve, Historical Record, 3000mAh USB Rechargeable, for PLC Simulator
- Adjustable 4-20mA Signal Generator Current Voltage Analog Simulator 0-10V/0-22mA Signal Sources for Value Adjusting PLC Controller Panel LED Testing Calibration
- 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

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-03-13*