--- product_id: 455327627 title: "Riiai SG003A 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" brand: "riiai" price: "VT33303" currency: VUV in_stock: true reviews_count: 8 category: "Riiai" url: https://www.desertcart.vu/products/455327627-riiai-sg003a-4-20ma-0-24v-current-signal-generator-current store_origin: VU region: Vanuatu --- # 0-24V voltage output precision ±0.01V 4 signal types: mA, V, Hz, XMT current 3000mAh USB rechargeable battery, 26h runtime Riiai SG003A 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 **Brand:** riiai **Price:** VT33303 **Availability:** ✅ In Stock ## Summary > ⚙️ Elevate your signal game—precision, power, and portability in one sleek device! ## Quick Answers - **What is this?** Riiai SG003A 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 by riiai - **How much does it cost?** VT33303 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/455327627-riiai-sg003a-4-20ma-0-24v-current-signal-generator-current) ## 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 - • **Pro-Level Portability:** Compact 4.4x3.2 inch design weighs just over a pound—take precision calibration wherever you go. - • **Power Through Your Day:** Built-in 3000mAh rechargeable battery delivers up to 26 hours of uninterrupted testing freedom. - • **Vivid 2.4" TFT Display:** Navigate complex signals day or night on a crisp 240x320 color screen with adjustable backlight. - • **Precision Signal Mastery:** Switch seamlessly among 4 signal types with ultra-fine 0.01mA/V accuracy for flawless PLC testing. - • **Versatile Multi-Interface:** Customize outputs with programmable modes including PWM, voltage-current conversion, and auto cycling. ## Overview The Riiai SG003A is a professional-grade 4-20mA and 0-24V current signal generator featuring ultra-precise analog simulation across multiple signal types, a vibrant 2.4-inch TFT color display, and a robust 3000mAh USB rechargeable battery enabling up to 26 hours of continuous operation. Designed for PLC testing and industrial calibration, it offers programmable output modes and versatile interfaces in a compact, portable form factor. ## Description desertcart.com: Riiai SG003A 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 : 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: Incredible! Hard to follow manual thiugh - This little thing is absolutely incredible. If I can find a use for it will be buying the higher end one too that can emulate thermocouples. The manual is helpful if you are REALLY good at reading manuals. Otherwise, there are loads of YouTube videos online. I really realized how good this thing is when I was using a $4k fluke process meter to calibrate it. I could only get the calibration to 0.005, but I’m fine with that. The big thing is this can put out an actual 24vdc (even up to 25vdc!) and the $4k process meter can only do ~20vdc. I had to set up a 24v power supply (measured to 24v exact) to calibrate that input. The 0-20mA is just as good! ## Features - 【Precise Conversion of Various Signal Types】 The 4-20ma signal generator is upgraded to support switching various signal modes available under different signal types: mA Current Signal (0 to 24 mA, precision 0.01mA), V Voltage Signal (0 to 24V, 0.01V), XMT Passive Current Signal (0 to 24mA, precision 0.01mA), Hz Pulse Signal (Frequency Output 0 to 9999 Hz, precision 5 digits). The input signal can be converted into an output signal among different physical quantities - 【2.4 Inch TFT Colorful Screen】 Designed with an adjustable pressing button backlight and a high-definition 240*320 TFT color LCD screen, it makes the signal generator kit for PLC testing easier for users to operate at night and during the day - 【Built-in 3000 mAh USB Rechargeable】 With a 3000 mAh 3.7V built-in USB rechargeable battery embedded inside (charged via a micro 5V USB port), the function generator can be fully charged within 4-6 hours. Its working length of up to 26 hours allows for a longer working period - 【Multiple Interfaces to Choose】 Main interface programmable output. Input waveform interface: switchable input current graph display, input voltage graph display. VCA conversion interface: switchable voltage to active current, voltage to passive current, current to voltage. Automatic interface: automatic mode can be set for single ascent, single drop, and loop. PWM interface: Output PWM signal, voltage, frequency, and duty cycle can be set - 【Programmable Output】 The 4-20 ma 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B425J18L | | Batteries | 1 Lithium Ion batteries required. (included) | | Best Sellers Rank | #40,332 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #9 in Function Generators | | Date First Available | June 14, 2022 | | Item Weight | 1.08 pounds | | Item model number | SG003 | | Manufacturer | Riiai | | Product Dimensions | 4.41 x 3.23 x 1.06 inches | ## Images ![Riiai SG003A 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 - Image 1](https://m.media-amazon.com/images/I/71xFG+PkLPL.jpg) ## Available Options This product comes in different **Model** options. ## Questions & Answers **Q: Why the signal generator needs to move a wire to a new port to use it?** A: Hello, the 0 to 10V signal generator is designed with two outputs. If the two outputs are connected together, it is easy to burn the controller. The wiring is different to protect the controller from burning. **Q: What signal types can the 4 20ma signal generator support?** A: Dear Customers, Compared with Riiai 003 signal generator, Riiai 004 type 4 20 ma calibrator is upgraded to support switching various signal modes available 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 9999Hz, resolution 5 digits), Resistance (0-390Ω, resolution 0.1Ω) Millivolt(-10-100mv, resolution 0.01mv). The functional generator can be applied to more tests. There is also a video for your reference. **Q: What's the difference between Riiai 003 signal generator and 004 function generator?** A: Dear Customers, Compared with 003 model(Blue type), the 004 model 4 20 ma signal generator is upgraded to support thermocouple testing, paperless history record that has a wider range of use. The rest functions are almost the same as the 003 model. Hope it helps. **Q: Where can i get english firmware? mine is in chinese.** A: Hi Jason, please contact us at support@riiai.com to get English firmware. ## 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. ### ⭐⭐⭐⭐⭐ Incredible! Hard to follow manual thiugh *by C***L on May 30, 2024* This little thing is absolutely incredible. If I can find a use for it will be buying the higher end one too that can emulate thermocouples. The manual is helpful if you are REALLY good at reading manuals. Otherwise, there are loads of YouTube videos online. I really realized how good this thing is when I was using a $4k fluke process meter to calibrate it. I could only get the calibration to 0.005, but I’m fine with that. The big thing is this can put out an actual 24vdc (even up to 25vdc!) and the $4k process meter can only do ~20vdc. I had to set up a 24v power supply (measured to 24v exact) to calibrate that input. The 0-20mA is just as good! ### ⭐⭐⭐⭐ Works great with minor issues *by J***L on June 3, 2023* Overall a very useful piece of test equipment with a few minor issues. Readings for analog inputs and outputs were very close to much more expensive test equipment we have at work. Good enough for my purposes. I love the rechargeable battery vs swapping alkalines, it charges fast and lasts a long time. The documentation isn't great so it takes a minute to figure out how to wire it. Same goes for the menu system. My unit had a couple of typos in the on screen text. I also couldn't figure out how to update the firmware. I'm not counting on a lot of support for something like this and it works fine as is, so I'm not worried about it. ## Frequently Bought Together - 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 - Adjustable 4-20mA Signal Generator Current Voltage Analog Simulator 0-10V/0-22mA Signal Sources for Value Adjusting PLC Controller Panel LED Testing Calibration - DROK 4-20mA Generator, Adjustable Signal Generator, DC 0-10V 0 4-20mA Current Voltage Analog Simulator for Value Adjusting PLC Panel LED Testing --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/455327627-riiai-sg003a-4-20ma-0-24v-current-signal-generator-current](https://www.desertcart.vu/products/455327627-riiai-sg003a-4-20ma-0-24v-current-signal-generator-current) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-03*