Fosc21C-DW Dual-Band WiFi USB 2-Channel Oscilloscope 2.4G/5G
Fosc21C-DW Dual-Band WiFi USB 2-Channel Oscilloscope 2.4G/5G
Fosc21C-DW Dual-Band WiFi + USB 2-Channel Oscilloscope | 2.4G/5G Signal Analysis
The Fosc21C-DW is a compact, versatile dual-band wireless oscilloscope that connects via WiFi (2.4G/5G) or USB, giving engineers, technicians, and hobbyists a powerful, portable tool for real-time signal analysis. With 2 simultaneous input channels, a 250 kHz bandwidth, and up to 1 MHz sampling rate per channel, it handles everything from basic waveform viewing to complex parallel signal debugging — all from your phone or computer.
Made in Mainland China.
Key Features
- Dual-Band WiFi + USB Connectivity: Wirelessly connect via 2.4G or 5G WiFi, or use the driverless USB interface for instant plug-and-play operation on any PC.
- 2-Channel Simultaneous Acquisition: Capture and compare two independent signals side-by-side — ideal for parallel signal analysis in industrial control, embedded systems, and sensor networks.
- Wide Amplitude & Time Base Range: Amplitude from 2 mV/div to 2 V/div (X10 probe: up to ±80V); time base from 10 µs/div to 10,800 s/div for both fast transients and long-duration recording.
- Rich Data Display: Automatically measures Period, Frequency, Peak-to-Peak, Maximum, Minimum, Average, RMS, Amplitude, Duty Cycle, and Pulse Width.
- Large Effective View Area (>80%): The software interface maximizes waveform detail with YT, XY, and Scrolling display modes.
- Deep Recording Depth: Up to 8M × 2 channels of data storage via PC software — capable of logging up to 90 continuous hours of signal data.
- Signal Isolation Monitoring: Supports isolated signal monitoring, adaptable to a wide range of application scenarios.
- Lightweight & Portable: ABS housing measuring just 115 × 70 × 29 mm and weighing only 230 g — ready for bench work or field deployment.
Ideal Applications
- Laboratory R&D and signal analysis
- Industrial automation and equipment maintenance
- Automotive electronic system testing
- Teaching and technical skills training
- Mobile device repair and field diagnostics
Full Specifications
| Model | Fosc21C-DW |
| Channels | 2 |
| Maximum Sampling Rate | 1 MHz × 2 |
| Bandwidth | 250 kHz |
| Input Impedance | 1 MΩ / 20 pF |
| Max Measurement Voltage | ±8V (X10 range: ±80V) |
| Amplitude Range | 2 mV/div – 2 V/div |
| Time Base Range | 10 µs/div – 10,800 s/div |
| Recording Depth | 8M × 2 ch / Max 90 hours |
| Waveform Display Modes | YT / XY / Scrolling |
| Vertical Resolution | 8 bits |
| Trigger Types | Rising Edge / Falling Edge |
| Interface | USB Driverless |
| WiFi Frequency | 2.4 GHz or 5 GHz |
| Operating Voltage | 5V |
| Current Consumption | <2A |
| Material | ABS |
| Dimensions | 115 × 70 × 29 mm |
| Net Weight | 230 g |
| Battery Included | No |
What's in the Box
- 1 × Fosc21C-DW Oscilloscope Unit
- 2 × BNC Connectors
- 1 × USB Data Cable
Quick Setup — WiFi Connection
- Connect the oscilloscope to your computer via USB and double-click Help in the disk drive to access the software download page, or scan the QR code on the device.
- For WiFi mode: press and hold the RESET button for more than 10 seconds to restore default settings.
- On your computer or smartphone, go to WiFi settings, select the Osc_XXXXXX network, and connect.
- Log in to the device's configuration web page to complete the WiFi setup.
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Frequently Asked Questions
Q: Does the Fosc21C-DW oscilloscope require special drivers to connect via USB?
A: No. The Fosc21C-DW features a driverless USB interface, so it connects instantly to Windows or compatible computers without installing any drivers. Simply plug in via the included USB data cable and download the companion software using the on-device instructions or QR code.
Q: What is the difference between the 2.4G and 5G WiFi modes on this oscilloscope?
A: The 2.4 GHz band offers broader range and better wall penetration, making it suitable for larger workspaces or areas with obstacles. The 5 GHz band provides faster, lower-latency data transfer, ideal for high-speed waveform streaming in close proximity. You can select the preferred band during the WiFi configuration setup on the device's settings page.
Q: Can I use this oscilloscope for automotive electronic system testing?
A: Yes. The Fosc21C-DW is well-suited for automotive electronic diagnostics. Its ±8V input range (expandable to ±80V with a ×10 probe) and dual-channel simultaneous capture let you monitor sensors, actuators, and control signals found in modern vehicle electronics. Its wireless connectivity also makes it convenient for under-hood work where cable routing is tricky.
Q: How long can the Fosc21C-DW record signal data?
A: When connected to PC software, the oscilloscope supports a recording depth of 8M × 2 channels, with a maximum continuous recording time of up to 90 hours — making it excellent for long-duration monitoring tasks in industrial or laboratory environments.