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⚙️ Power your precision — never miss a signal wave!
The Riiai SG004A is a compact, programmable 4-20mA and 0-24V signal generator designed for professional testing and simulation. Featuring multi-signal support, real-time curve visualization, and a robust 3000mAh rechargeable battery, it offers versatile, precise control for PLC simulators, thermocouple testing, and industrial device calibration. Its intuitive color-coded ports and programmable presets make it an indispensable tool for engineers and technicians seeking reliable, on-the-go signal generation.











| ASIN | B0B8V811G6 |
| Best Sellers Rank | #47,647 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #8 in Function Generators |
| Brand Name | Riiai |
| Color | Blue |
| Customer Reviews | 4.6 4.6 out of 5 stars (15) |
| Item Dimensions | 4.41 x 3.23 x 1.06 inches |
| Item Weight | 165 Grams |
| Manufacturer | Riiai |
| Measurement Type | Ammeter, Voltmeter, Ohmmeter |
| Model | SG004 |
| Power Source | Battery Powered |
| Style Name | fashion |
G**Z
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.
A**D
Great product.
Great product to have in your pocket.
R**.
Works well so far.....
Comes in a well organized package with all the components needed, including an operating manual. Unit firm and sturdy. Beautifully colored to identify varous lead etc. Reasonable size (palm size). Big enough for your hands but small enough to fit in your pocket, making transporting easy. Display big enough for easy read. Good Backlight. Seems to be fairly accurate when tested. Instructions are a bit hard to follow. Currently familiarizing myself with the various parameters and so far it is delivering what it says it can. I will provide more updates as I get more acquainted with this meter
B**W
Surprising little gadget
Worked exactly as advertised! Not bad for $160, may not be getting the accuracy of that other major name brand ($$$$) but that's just fine!
J**Y
Works good
It works good once you figure out the buttons/settings.
T**R
Great signal generator for the money
Does what it’s supposed to. Pretty impressive features/performance for the money. Operating manual is rather brief however!
Trustpilot
2 weeks ago
2 months ago