---
product_id: 259873978
title: "1HZ-500KHZ DDS Functional Signal Generator, Seesii DDS Function Low Frequency Signal Generator Sine/Triangle/Square/Sawtooth Waveform"
brand: "seesii"
price: "¥9785"
currency: JPY
in_stock: false
reviews_count: 10
url: https://www.desertcart.jp/products/259873978-1hz-500khz-dds-functional-signal-generator-seesii-dds-function-low
store_origin: JP
region: Japan
---

# 1Hz–500kHz wide freq range 4 waveform types: sine, square, triangle, sawtooth USB powered, no bulky adapters 1HZ-500KHZ DDS Functional Signal Generator, Seesii DDS Function Low Frequency Signal Generator Sine/Triangle/Square/Sawtooth Waveform

**Brand:** seesii
**Price:** ¥9785
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Generate Waves, Command Circuits, Own the Lab!

## Quick Answers

- **What is this?** 1HZ-500KHZ DDS Functional Signal Generator, Seesii DDS Function Low Frequency Signal Generator Sine/Triangle/Square/Sawtooth Waveform by seesii
- **How much does it cost?** ¥9785 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/259873978-1hz-500khz-dds-functional-signal-generator-seesii-dds-function-low)

## Best For

- seesii enthusiasts

## Why This Product

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

## Key Features

- • **Tinkerer's Dream:** Open firmware architecture invites customization and upgrades for the tech-savvy innovator.
- • **Waveform Wizardry:** Seamlessly switch between sine, square, triangle, and sawtooth waves to match any project.
- • **Compact Powerhouse:** Lightweight and pocket-friendly, perfect for on-the-go professionals and lab setups.
- • **Plug & Play Portability:** USB-powered design means zero fuss—just connect and generate anywhere.
- • **Versatile Frequency Mastery:** Covers ultra-low to mid-frequency signals (1Hz–500kHz) for all your testing needs.

## Overview

The Seesii 1Hz-500kHz DDS Functional Signal Generator is a compact, USB-powered device designed for professionals and hobbyists needing reliable low-frequency waveform generation. Supporting sine, square, triangle, and sawtooth outputs, it offers versatile testing capabilities from 1Hz up to 500kHz. Its lightweight design and intuitive interface make it ideal for circuit debugging, audio calibration, and educational use, while its open firmware allows advanced users to customize and enhance functionality.

## Description

1HZ-500KHZ DDS Functional Signal Generator, Seesii DDS Function Low Frequency Signal Generator Sine/Triangle/Square/Sawtooth Waveform: desertcart.com: Industrial & Scientific

Review: Not bad for the cost - The FG-100 DDS generator is handy for casual testing of various projects (mostly in the audio range). If you are concerned about things like accuracy, jitter, rise and fall time, etc.. then this generator is not for you. It should not be used as a calibration standard... it's not that accurate. The display is a standard 16x2 LCD with a green backlight. The output can go as high as ±10 volts (there is an internal voltage generator). The output filter really does nothing. The zero offset control works, but is rather useless. This little signal generator consists of an Atmel ATMega48v microcontroller driving an R2R ladder (8 bits) to generate the waveforms. The waveforms are precalculated and stored in the microcontroller's flash memory. A small loop written in tight assembler cranks the samples out to the R2R ladder to generate the signal. The rest of the code is ordinary C. You could easily add to the waveform library if you wish. Just generate it, store it to flash and add to the menu. The ATMega48v is clocked at 30.0 MHz. (!) which is way above it's spec, but it runs just fine and stable as ATMega's do. If you are an Arduino tinkerer and have a compiler and ICSP programmer, there is a third party program that you can program into an ATMega328p chip and improve the functionality of this generator (one handy feature being storing the last used settings in EEPROM so that the generator comes up the way it was last set. The buttons are also debounced much better). Search for "Alternate Firmware for FG-100". You will need the ATMega328p because the Mega48v doesn't have enough memory to add anything to the stock code. The 328 and 48 chips are, of course, pin compatible. All in all, this generator works great for what it is, and it's design makes tinkering with it or adding to it easy. It will be a both a useful tool and a fun platform to tinker with. I bought two of them, one to use and one to experiment with. I highly recommend it. Lots of fun! LOL!
Review: Versatile and Reliable Signal Generator for Low-Frequency Applications - The Seesii 1Hz-500kHz DDS Functional Signal Generator is a compact and versatile tool designed for hobbyists, engineers, and educators needing reliable waveform generation. Supporting sine, triangle, square, and sawtooth waveforms, it is ideal for testing, troubleshooting, and educational demonstrations. I tested this device for signal generation in circuit analysis and audio system calibration. Pros: ✅ Wide Frequency Range: Covers 1Hz to 500kHz, accommodating most low-frequency applications. ✅ Multiple Waveforms: Sine, triangle, square, and sawtooth waveforms provide flexibility for various testing needs. ✅ User-Friendly Interface: Intuitive controls and a clear digital display make setup and adjustments straightforward. ✅ Compact Design: Lightweight and portable, making it easy to integrate into workspace setups. ✅ Cost-Effective: Offers excellent functionality at a competitive price point. Cons: ❌ Limited to Low Frequencies: While suitable for many tasks, it lacks support for higher-frequency applications beyond 500kHz. ❌ Build Quality: The plastic casing feels slightly less durable, potentially limiting long-term rugged use in harsh environments. Performance and Usability: The Seesii DDS Signal Generator performed reliably during testing, with accurate waveform generation across its frequency range. The signal stability was consistent, and the distortion levels for sine waves were within acceptable limits. Its ability to generate different waveforms smoothly with adjustable amplitude and frequency made it versatile for tasks like circuit tuning and teaching waveform concepts. The digital display is bright and easy to read, though the button placement could be more ergonomic. Comparison: Compared to similar products, such as the Koolertron 1Hz-500kHz signal generator, the Seesii device offers comparable functionality but at a slightly lower price point. However, higher-end models like Siglent function generators may provide additional features, such as higher frequency ranges and more robust casings, albeit at a higher cost. Who Is This For?: This signal generator is ideal for students, hobbyists, and professionals working on low-frequency applications who require a cost-effective and reliable tool for waveform generation. It’s less suited for advanced users needing higher frequencies or more rugged equipment. Conclusion: The Seesii 1Hz-500kHz DDS Functional Signal Generator is a reliable and versatile tool for generating low-frequency waveforms. Its compact design, ease of use, and cost-efficiency make it an excellent choice for basic to intermediate signal generation tasks. However, users requiring high-frequency capabilities or more durable construction may need to explore higher-end models.

## Features

- 1Hz–500kHz DDS signal generator is small but has many functions, easy to operate and carry. It is powered via USB cable (no battery or AC/DC adaptor required).
- It can be used with oscilloscope to test and debug electronic circuit, the frequency response of audio amplifier and impulse response,It also can calibrate the sweep time factor of oscilloscope.
- The square waveform is suitable for oscilloscope attenuator and the adjustment of probe impulse response.
- Have a filter (can be opened and closed) to suit the output of sine wave and pulse wave.
- This functional signal generator can test many kinds of wave forms such as: sine, square, triangle, positive and negative sawtooth waveform. It is especially designed for those professional worker.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08NSR5GYR |
| Date First Available | November 18, 2020 |
| Item Weight | 3.52 ounces |
| Item model number | FG-100 |
| Manufacturer | Seesii |
| Product Dimensions | 5.12 x 3.94 x 1.97 inches |

## Images

![1HZ-500KHZ DDS Functional Signal Generator, Seesii DDS Function Low Frequency Signal Generator Sine/Triangle/Square/Sawtooth Waveform - Image 1](https://m.media-amazon.com/images/I/71-9KFD-XqL.jpg)
![1HZ-500KHZ DDS Functional Signal Generator, Seesii DDS Function Low Frequency Signal Generator Sine/Triangle/Square/Sawtooth Waveform - Image 2](https://m.media-amazon.com/images/I/71dZ8KiCdBL.jpg)
![1HZ-500KHZ DDS Functional Signal Generator, Seesii DDS Function Low Frequency Signal Generator Sine/Triangle/Square/Sawtooth Waveform - Image 3](https://m.media-amazon.com/images/I/71W68QJ1v0L.jpg)
![1HZ-500KHZ DDS Functional Signal Generator, Seesii DDS Function Low Frequency Signal Generator Sine/Triangle/Square/Sawtooth Waveform - Image 4](https://m.media-amazon.com/images/I/71phss0fTIL.jpg)
![1HZ-500KHZ DDS Functional Signal Generator, Seesii DDS Function Low Frequency Signal Generator Sine/Triangle/Square/Sawtooth Waveform - Image 5](https://m.media-amazon.com/images/I/71gs0gdw86L.jpg)

## Questions & Answers

**Q: Can you generate an audible sound to be amplified?**
A: You can connect this to a power amplifier only if the output AC voltage matches the input sensitity of your amp. Most amplifiers these days have an input sensitivity of either 0.775 VAC or 1.4 VAC. The manufacturer does not include in their specifications what is the output voltage. Before connecting to an amplifier you will need to measure the output voltage to see if it's enough to feed your amp. If not you will end up frying your amplifier and will need to connect to a preamp before connecting to your power amp. I tried this with a signal generator and learned the hard way. Honestly you are better off purchasing a signal generator and preamp since a signal generator gives you a wide range of wave functions to work with.

**Q: Any ideas on how to hook it up to an amp with rca inputs?**
A: If you are looking for a cable then https://www.amazon.com/CIMPLE-CO-Cable-Black-Professional/dp/B06XKLT756 if you already have RCA cable, then https://www.amazon.com/RuiLing-Female-Adapters-Coaxial-Connector/dp/B00VUG00FI

**Q: Can this generate low voltage square waves (20-40 mV peak to peak)?**
A: one can always place a voltage divider on the output to get very low amplitudes

**Q: Can you set this to the Schumann frequency of 7.83 Hz? Can this generator pulse its output?**
A: Mine can only be set in 1 hz increments

## Customer Reviews

### ⭐⭐⭐⭐⭐ Not bad for the cost
*by R***K on February 15, 2022*

The FG-100 DDS generator is handy for casual testing of various projects (mostly in the audio range). If you are concerned about things like accuracy, jitter, rise and fall time, etc.. then this generator is not for you. It should not be used as a calibration standard... it's not that accurate. The display is a standard 16x2 LCD with a green backlight. The output can go as high as ±10 volts (there is an internal voltage generator). The output filter really does nothing. The zero offset control works, but is rather useless. This little signal generator consists of an Atmel ATMega48v microcontroller driving an R2R ladder (8 bits) to generate the waveforms. The waveforms are precalculated and stored in the microcontroller's flash memory. A small loop written in tight assembler cranks the samples out to the R2R ladder to generate the signal. The rest of the code is ordinary C. You could easily add to the waveform library if you wish. Just generate it, store it to flash and add to the menu. The ATMega48v is clocked at 30.0 MHz. (!) which is way above it's spec, but it runs just fine and stable as ATMega's do. If you are an Arduino tinkerer and have a compiler and ICSP programmer, there is a third party program that you can program into an ATMega328p chip and improve the functionality of this generator (one handy feature being storing the last used settings in EEPROM so that the generator comes up the way it was last set. The buttons are also debounced much better). Search for "Alternate Firmware for FG-100". You will need the ATMega328p because the Mega48v doesn't have enough memory to add anything to the stock code. The 328 and 48 chips are, of course, pin compatible. All in all, this generator works great for what it is, and it's design makes tinkering with it or adding to it easy. It will be a both a useful tool and a fun platform to tinker with. I bought two of them, one to use and one to experiment with. I highly recommend it. Lots of fun! LOL!

### ⭐⭐⭐⭐ Versatile and Reliable Signal Generator for Low-Frequency Applications
*by G***1 on December 12, 2024*

The Seesii 1Hz-500kHz DDS Functional Signal Generator is a compact and versatile tool designed for hobbyists, engineers, and educators needing reliable waveform generation. Supporting sine, triangle, square, and sawtooth waveforms, it is ideal for testing, troubleshooting, and educational demonstrations. I tested this device for signal generation in circuit analysis and audio system calibration. Pros: ✅ Wide Frequency Range: Covers 1Hz to 500kHz, accommodating most low-frequency applications. ✅ Multiple Waveforms: Sine, triangle, square, and sawtooth waveforms provide flexibility for various testing needs. ✅ User-Friendly Interface: Intuitive controls and a clear digital display make setup and adjustments straightforward. ✅ Compact Design: Lightweight and portable, making it easy to integrate into workspace setups. ✅ Cost-Effective: Offers excellent functionality at a competitive price point. Cons: ❌ Limited to Low Frequencies: While suitable for many tasks, it lacks support for higher-frequency applications beyond 500kHz. ❌ Build Quality: The plastic casing feels slightly less durable, potentially limiting long-term rugged use in harsh environments. Performance and Usability: The Seesii DDS Signal Generator performed reliably during testing, with accurate waveform generation across its frequency range. The signal stability was consistent, and the distortion levels for sine waves were within acceptable limits. Its ability to generate different waveforms smoothly with adjustable amplitude and frequency made it versatile for tasks like circuit tuning and teaching waveform concepts. The digital display is bright and easy to read, though the button placement could be more ergonomic. Comparison: Compared to similar products, such as the Koolertron 1Hz-500kHz signal generator, the Seesii device offers comparable functionality but at a slightly lower price point. However, higher-end models like Siglent function generators may provide additional features, such as higher frequency ranges and more robust casings, albeit at a higher cost. Who Is This For?: This signal generator is ideal for students, hobbyists, and professionals working on low-frequency applications who require a cost-effective and reliable tool for waveform generation. It’s less suited for advanced users needing higher frequencies or more rugged equipment. Conclusion: The Seesii 1Hz-500kHz DDS Functional Signal Generator is a reliable and versatile tool for generating low-frequency waveforms. Its compact design, ease of use, and cost-efficiency make it an excellent choice for basic to intermediate signal generation tasks. However, users requiring high-frequency capabilities or more durable construction may need to explore higher-end models.

### ⭐⭐⭐⭐⭐ Great, inexpensive generator for basic tests and simple lab projects
*by R***U on July 13, 2025*

If you have the right expectations, then you get exactly what you look for. This is a basic generator, great for simple tests or projects and also very cost effective. Very good compromise between cost and performance. Really simple to use.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-02*