{"product_id":"fosc21c-dw-dual-band-wifi-usb-2-channel-oscilloscope-2-4g-5g","title":"Fosc21C-DW Dual-Band WiFi USB 2-Channel Oscilloscope 2.4G\/5G","description":"\n\u003ch2\u003eFosc21C-DW Dual-Band WiFi + USB 2-Channel Oscilloscope | 2.4G\/5G Signal Analysis\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eFosc21C-DW\u003c\/strong\u003e is a compact, versatile dual-band wireless oscilloscope that connects via \u003cstrong\u003eWiFi (2.4G\/5G) or USB\u003c\/strong\u003e, giving engineers, technicians, and hobbyists a powerful, portable tool for real-time signal analysis. With \u003cstrong\u003e2 simultaneous input channels\u003c\/strong\u003e, 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.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Band WiFi + USB Connectivity:\u003c\/strong\u003e Wirelessly connect via 2.4G or 5G WiFi, or use the driverless USB interface for instant plug-and-play operation on any PC.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2-Channel Simultaneous Acquisition:\u003c\/strong\u003e Capture and compare two independent signals side-by-side — ideal for parallel signal analysis in industrial control, embedded systems, and sensor networks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Amplitude \u0026amp; Time Base Range:\u003c\/strong\u003e 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.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRich Data Display:\u003c\/strong\u003e Automatically measures Period, Frequency, Peak-to-Peak, Maximum, Minimum, Average, RMS, Amplitude, Duty Cycle, and Pulse Width.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge Effective View Area (\u0026gt;80%):\u003c\/strong\u003e The software interface maximizes waveform detail with YT, XY, and Scrolling display modes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep Recording Depth:\u003c\/strong\u003e Up to 8M × 2 channels of data storage via PC software — capable of logging up to 90 continuous hours of signal data.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignal Isolation Monitoring:\u003c\/strong\u003e Supports isolated signal monitoring, adaptable to a wide range of application scenarios.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLightweight \u0026amp; Portable:\u003c\/strong\u003e ABS housing measuring just 115 × 70 × 29 mm and weighing only 230 g — ready for bench work or field deployment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLaboratory R\u0026amp;D and signal analysis\u003c\/li\u003e\n  \u003cli\u003eIndustrial automation and equipment maintenance\u003c\/li\u003e\n  \u003cli\u003eAutomotive electronic system testing\u003c\/li\u003e\n  \u003cli\u003eTeaching and technical skills training\u003c\/li\u003e\n  \u003cli\u003eMobile device repair and field diagnostics\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFull Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFosc21C-DW\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Sampling Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 MHz × 2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBandwidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 MΩ \/ 20 pF\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Measurement Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±8V (X10 range: ±80V)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmplitude Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 mV\/div – 2 V\/div\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTime Base Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 µs\/div – 10,800 s\/div\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecording Depth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8M × 2 ch \/ Max 90 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWaveform Display Modes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYT \/ XY \/ Scrolling\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVertical Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrigger Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRising Edge \/ Falling Edge\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB Driverless\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiFi Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.4 GHz or 5 GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;2A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eABS\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e115 × 70 × 29 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e230 g\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Fosc21C-DW Oscilloscope Unit\u003c\/li\u003e\n  \u003cli\u003e2 × BNC Connectors\u003c\/li\u003e\n  \u003cli\u003e1 × USB Data Cable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eQuick Setup — WiFi Connection\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eConnect the oscilloscope to your computer via USB and double-click \u003cem\u003eHelp\u003c\/em\u003e in the disk drive to access the software download page, or scan the QR code on the device.\u003c\/li\u003e\n  \u003cli\u003eFor WiFi mode: press and hold the \u003cstrong\u003eRESET\u003c\/strong\u003e button for more than 10 seconds to restore default settings.\u003c\/li\u003e\n  \u003cli\u003eOn your computer or smartphone, go to WiFi settings, select the \u003cstrong\u003eOsc_XXXXXX\u003c\/strong\u003e network, and connect.\u003c\/li\u003e\n  \u003cli\u003eLog in to the device's configuration web page to complete the WiFi setup.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003eLooking for more precision tools? Check out our \u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge – DIY Tool\u003c\/a\u003e or explore the \u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Circuit Fault Detector\u003c\/a\u003e for complementary diagnostic solutions.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: Does the Fosc21C-DW oscilloscope require special drivers to connect via USB?\u003c\/h4\u003e\n\u003cp\u003eA: No. The Fosc21C-DW features a \u003cstrong\u003edriverless USB interface\u003c\/strong\u003e, 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.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the difference between the 2.4G and 5G WiFi modes on this oscilloscope?\u003c\/h4\u003e\n\u003cp\u003eA: The \u003cstrong\u003e2.4 GHz band\u003c\/strong\u003e offers broader range and better wall penetration, making it suitable for larger workspaces or areas with obstacles. The \u003cstrong\u003e5 GHz band\u003c\/strong\u003e 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.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use this oscilloscope for automotive electronic system testing?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How long can the Fosc21C-DW record signal data?\u003c\/h4\u003e\n\u003cp\u003eA: When connected to PC software, the oscilloscope supports a recording depth of \u003cstrong\u003e8M × 2 channels\u003c\/strong\u003e, with a maximum continuous recording time of up to \u003cstrong\u003e90 hours\u003c\/strong\u003e — making it excellent for long-duration monitoring tasks in industrial or laboratory environments.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Does the Fosc21C-DW oscilloscope require special drivers to connect via USB?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. The Fosc21C-DW features a driverless USB interface, so it connects instantly to Windows or compatible computers without installing any drivers. 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