Gaqqee DT550 DC Digital Voltmeter Ammeter Wattmeter 4.5–50V

Gaqqee DT550 Multifunctional DC Power Meter — Voltage, Current & Wattage at a Glance

The Gaqqee DT550 is a compact, high-precision digital tester that simultaneously monitors voltage (4.5–50V DC), current (0–6A), and power (0–600W) — all on a vivid colour or monochrome display. Whether you're bench-testing power supplies, checking routers, laptop adapters, or any DC-port device, the DT550 gives you real-time, accurate readings in a pocket-sized unit. CE and RoHS certified.

Made in Mainland China.

Key Features

• All-in-One Measurements: Voltage, current, power, energy consumption (0–9,999,999 Wh), capacity (0–9,999,999 mAh), CPU temperature, elapsed time, and peak voltage/current/power — all in one device.
• Colour & Monochrome Display: Hold the "Rotate Screen" button for ~3 seconds during interface transitions to toggle between full-colour and monochrome modes.
• 360° Four-Way Rotatable Screen: Display automatically stays upright no matter which orientation you test in — no squinting or awkward angles.
• Universal DC Compatibility: Works with computer monitors, routers, switches, laptop power bricks, power tools, and any commercially available DC barrel-connector device.
• Dual-Pin Jack Design: 5.5×2.5mm barrel connector with tuning-fork tip also fits 2.1mm connectors — one meter, broad versatility.
• Data Record Function: Logs measurements for later review, making it ideal for ongoing diagnostics and project documentation.
• Ultra-Low Self-Consumption: Instrument power draw under 0.5W and sampling resistance of just 0.001Ω minimise interference with your measurements.
• Short-Term Peak Handling: Rated 0–6A continuous with short-term peak tolerance up to 12A.

Technical Specifications

What's in the Box

• DT550 Multifunctional DC Power Tester ×1

Related Products You May Like

• Ancient Nutrition Multi Collagen Advanced Muscle 60 Capsules
• B&U 29mm Sinking Minnow Jerkbait Lure – Bass Trout Pike

Learn more: OSHA guidance on hand and power tools

Frequently Asked Questions

Q: What types of devices is the Gaqqee DT550 digital power meter compatible with?

A: The DT550 is compatible with any DC-powered device that uses a barrel connector, including computer monitors, routers, network switches, laptop power adapters, LED lighting systems, and power tools. It accepts DC voltages from 4.5V to 50V, making it suitable for a wide range of consumer and DIY electronics applications.

Q: Does the DT550 voltmeter require its own battery to operate?

A: No — the DT550 is powered directly by the circuit being measured, so no separate battery is needed. It draws less than 0.5W from the host circuit, ensuring minimal impact on your readings.

Q: How do I switch between colour and monochrome display on the DT550?

A: Press and hold the "Rotate Screen" button for approximately 3 seconds while the display is transitioning between screens. The meter will toggle between full-colour and monochrome modes. The 360° auto-rotating screen also keeps readings upright in any testing orientation.

Q: Can the DT550 handle current spikes above 6A?

A: Yes. While the DT550 is rated for continuous operation at 0–6A, it can tolerate short-term current peaks of up to 12A. For sustained high-current applications above 6A, a higher-rated meter would be recommended.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.