---
product_id: 519064992
title: "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"
brand: "koolertron"
price: "KD 3.45"
currency: KWD
in_stock: false
reviews_count: 4
url: https://www.desertcart.com.kw/products/519064992-koolertron-0-4-20ma-dc-0-10v-signal-generator-2
store_origin: KW
region: Kuwait
---

# ±10V voltage output, 0.01V accuracy 4-digit LCD display, real-time precision 1000mAh rechargeable battery, 4h charge 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

**Brand:** koolertron
**Price:** KD 3.45
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Power Your Precision, Anywhere, Anytime!

## Quick Answers

- **What is this?** 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 by koolertron
- **How much does it cost?** KD 3.45 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/519064992-koolertron-0-4-20ma-dc-0-10v-signal-generator-2)

## Best For

- koolertron enthusiasts

## Why This Product

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

## Key Features

- • **Smart Battery Life:** Rechargeable 1000mAh lithium battery with power indicator ensures uninterrupted workflow and quick 4-hour recharge cycles.
- • **Built for the Field:** Rugged aluminum alloy knob and frosted non-slip shell combine durability with sleek portability—your on-the-go testing companion.
- • **User-Centric Design:** One-key toggle, short circuit & reverse polarity protection, plus memory save function means zero downtime and zero guesswork.
- • **Dual-Mode Powerhouse:** Seamlessly switch between voltage (-10V to +10V) and current (0-22mA) outputs with ultra-fine 0.01 precision for flawless debugging.
- • **Versatile Application:** Engineered for PLC, panel debugging, servo motor control, and frequency converters—trusted by R&D pros and maintenance experts alike.

## Overview

The Koolertron 0/4-20mA DC 0-10V Signal Generator is a compact, dual-function handheld device designed for professional PLC and panel testing. Featuring ultra-precise voltage and current outputs with 0.01 accuracy, a durable aluminum alloy build, and a rechargeable 1000mAh battery, it offers reliable performance with user-friendly controls and safety protections. Ideal for maintenance and R&D environments, it ensures efficient, on-the-spot diagnostics and equipment calibration.

## Description

Specification:Material: ABS+Aluminum alloyPower: 4WBattery: 1000mAh lithium batteryPower supply mode (3 types): DC 15-30V/USB-5V/built-in lithium batteryCharging time: 4 hoursVoltage output: -10V to +10V (default setting 0-10V)Adjustment accuracy: 0.01VCurrent output: 0-22mA (default setting 0-20mA)Adjustment accuracy: 0.01mACurrent samplingresistance: 10-500ΩDigital tube display digits: 4 digitsWorking environment: 0-40℃Product List:1*Voltage and current generator1*Power cord1*Screwdriver6*Terminal4*Insulation clip cover4* clip1*Instruction

Review: This is a great tool for signal testing. Easy to use and works good
Review: Great little testers for 4 to 20ma.

## Features

- 【Multifunctional Frequency Generator】 Upgrade the multifunctional mini handheld digital Signal Generator. Using high-grade aluminum alloy knob, ultra-thin frosted non-slip shell, light and portable, it can be used for PLC and panel debugging, continuous speed regulation of servo motor forward and reverse, equipment testing, frequency converter, etc.
- 【2-in-1 Voltage and Current Generator.】Signal Generator Voltage output: -10V~+10V, accuracy 0.01V, easy to debug forward and reverse; Current output: 0-22mA, accuracy 0.01mA, error 5% can be calibrated. 【Built-in 1000mAh Rechargeable Battery.】Koolertron Signal Generator Built-in 3.7V 1000mAh lithium battery, easy to use, and has a power indicator.
- Built-in 1000mAh Rechargeable Battery.】Koolertron Signal Generator Built-in 3.7V 1000mAh lithium battery, easy to use, and has a power indicator.
- 【WIDE APPLICATION】:Analog Generator is a full-featured, highly practical, cost-effective handheld Function Generators developed for people in the maintenance and R&D industries,it can be used for PLC and panel debugging, device testing, frequency converter and ect.
- 【EASY TO OPERATE 】：4-20mA Signal Generator One-key switching of voltage and current, independent wiring, simultaneous output, output with short circuit protection, power supply with reverse connection protection,Store the power-on output value when power off. After use, press the knob to save, and the next time the machine is turned on, it will still be the value stored manually last time. It is easy to use, not afraid of confusion, and easy to debug.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008ERCVMG |
| Best Sellers Rank | #265,172 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #250 in Function Generators |
| Brand | Koolertron |
| Colour | Black |
| Current Rating | 22 Milliamps |
| Customer Reviews | 4.5 4.5 out of 5 stars (8) |
| Date First Available | 28 June 2022 |
| Engine Type | 4 Stroke |
| Included Components | Charging Cable |
| Item Weight | 181 g |
| Item model number | MG4GH-GGERT08G |
| Manufacturer | Koolertron |
| Material | ABS+Aluminum alloy |
| Model Name | Koolertron Signal Generator |
| Model number | MG4GH-GGERT08G |
| Output Wattage | 4 Watts |
| Package Dimensions | 15.39 x 8.89 x 5.21 cm; 181 g |
| Power Source | Battery Powered |
| Recommended Uses For Product | Maintenance, R&D Industries |
| Running Wattage | 4 Watts |
| Special Feature | Portable |
| Starting Wattage | 4 Watts |
| Total Power Outlets | 2 |
| Voltage | 30 Volts |
| Wattage | 4 Watts |

## Product Details

- **Brand:** Koolertron
- **Colour:** Black
- **Included Components:** Charging Cable
- **Material:** ABS+Aluminum alloy
- **Output Wattage:** 4 Watts
- **Power Source:** Battery Powered
- **Recommended Uses For Product:** Maintenance, R&D Industries
- **Special Feature:** Portable
- **Voltage:** 30 Volts
- **Wattage:** 4 Watts

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/41I2hXycYJL.jpg)
![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 - Image 2](https://m.media-amazon.com/images/I/41zZsgTQ8xL.jpg)
![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 - Image 3](https://m.media-amazon.com/images/I/518P8FjF0wL.jpg)
![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 - Image 4](https://m.media-amazon.com/images/I/519MO5J62gL.jpg)
![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 - Image 5](https://m.media-amazon.com/images/I/51DUS-7IE8L.jpg)

## Questions & Answers

**Q: Does this allow 5-10mW granularity of signal strength?**
A: Yes, If you have any problem can feel free to contact our customer service  email"karstonecorp@gmail.com ",we are glad to service our customer.

**Q: Regarding the cjds38-b, can rf output be modulated with a tone?  i can't see from the manual how to do this.**
A: No.  Feed signal into your AM modulator.

**Q: Can a preset output signal be turned on and off using an external digital input?**
A: You are asking if there is an external trigger input if I read your question correctly.  No, there is no external trigger input to turn on a preset waveform.  You can manually turn of either channel with a push button switch on each channel.

**Q: Hi, i have this device but i would like more power (higher vpp). do i need to buy a power amplifier?**
A: Yes, you might get a lab amp, works well. At home I used a 3000W stereo amp, that worked well too.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by R***H on 18 September 2025*

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

### ⭐⭐⭐⭐⭐ Review
*by S***T on 20 April 2025*

Great little testers for 4 to 20ma.

### ⭐⭐⭐⭐⭐ Review
*by A***R on 26 June 2023*

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.

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-01-27*