Got it — the Ruideng UM25 (non-Bluetooth, color LCD version) with USB-A male input and USB-C + USB-A female outputs. Here's the SEO-friendly description:
🔌 Ruideng UM25 USB Tester – Color LCD Voltage Current Meter | USB-C & USB-A | Power Analyzer Voltmeter
Know exactly what your USB devices are drawing — in full color.
The Ruideng UM25 is a professional-grade USB power meter that plugs inline between any USB charger and device, giving you a real-time, full-color readout of voltage, current, power, and more. Whether you're testing chargers, diagnosing slow charging, checking cable quality, or monitoring battery capacity, the UM25 puts all the data you need right in front of you — instantly.
✅ Key Features:
- 1.44" Full Color TFT LCD Display — bright, clear, easy-to-read readout even in direct light
- USB-A Male Input + USB-A & USB-C Female Outputs — works with virtually any USB device or cable
- Measures Voltage, Current, Power, Resistance, Energy & Capacity — everything you need in one compact tool
- 9 Data Groups — log and compare charging sessions across multiple devices
- Charging Protocol Detection — identifies fast charging protocols for accurate diagnostics
- Low Power Consumption — minimal impact on the measurement being taken
- Compact Inline Design — no cables needed, plugs directly into any USB port or charger
📋 Specifications:
ParameterRange / DetailVoltage Range4V – 24VCurrent Range0 – 5APowerUp to 120WVoltage Resolution0.001VCurrent Resolution0.0001ACapacity MeasurementmAh / mWhDisplay1.44" Color TFT LCDInput ConnectorUSB-A MaleOutput ConnectorsUSB-A Female + USB-C FemaleBluetooth❌ No (non-BT version)
⚙️ Perfect For:Checking charger output accuracy · testing USB cables for voltage drop · verifying fast charge protocols · monitoring power banks · diagnosing slow charging issues · DIY electronics & repair · battery capacity testing · lab bench testing
💡 Why the UM25?
Most cheap USB testers give you a tiny 7-segment display and basic voltage/current only. The Ruideng UM25 gives you a full color screen, resistance measurement, energy accumulation, and multi-group data logging — at a fraction of the cost of bench equipment. It's the go-to tool for anyone serious about USB power.
📦 Package Contents:1x Ruideng UM25 USB Power Meter Tester
Non-Bluetooth version. For app connectivity, see the UM25C.
