Gaqqee DT550 DC Voltmeter Ammeter Wattmeter 4.5–50V 0–6A
Gaqqee DT550 DC Voltmeter Ammeter Wattmeter 4.5–50V 0–6A
Gaqqee DT550 High-Precision DC Interface Tester – Voltmeter, Ammeter & Wattmeter
The Gaqqee DT550 is a compact, high-precision DC power meter built for makers, technicians, and electronics enthusiasts who need accurate, real-time measurements at a glance. With its DC 5.5×2.5mm interface, it slots directly between your power source and DC-powered device — no extra leads required — giving you instant readings of voltage, current, power, energy, capacity, and more.
Key Features
- Multi-Parameter Measurement: Simultaneously monitors voltage (DC 4.5–50V), current (0–6A, peak 12A), power (0–600W), energy (0–9,999,999 Wh), capacity (0–9,999,999 mAh), elapsed time, CPU temperature, and peak values — all in one device.
- Colour / Monochrome Screen: Press and hold the screen rotation button for ~3 seconds while switching interfaces to toggle between a vivid colour display and a sharp monochrome mode, whichever suits your environment best.
- 360° Rotating Display: The four-way rotating screen ensures readings are always right-side-up, no matter which direction you're viewing from — ideal for bench setups or tight cable runs.
- Wide Device Compatibility: Works with computer monitors, routers, network switches, laptops, power tools, and virtually any DC-powered device with a standard DC port. The 2.5mm fork male connector is also compatible with 2.1mm sockets for broader application.
- Ultra-Low Sampling Resistance: The 0.001Ω sampling resistor minimises measurement-induced losses, keeping readings accurate and your device's performance unaffected.
- CE & RoHS Certified: Designed and tested to meet CE and RoHS standards for safety and environmental compliance.
- Data Record Function: Captures maximum voltage, current, and power peaks over a session so you can review performance history without additional logging equipment.
Technical Specifications
| Model | DT550 |
| Interface | DC 5.5 × 2.5 mm |
| Operating Voltage | DC 4.5–50V |
| Operating Current | 0–6A (short-term peak 12A) |
| Power Display | 0–600W |
| Energy Display | 0–9,999,999 Wh |
| Capacity Display | 0–9,999,999 mAh |
| Sampling Resistance | 0.001Ω |
| Operating Temperature | 0–45°C / 32–113°F |
| Power Consumption | <0.5W |
| Dimensions | 58 × 26 × 16 mm |
| Display Type | Digital (Colour / Monochrome selectable) |
| Certifications | CE, RoHS |
| Country of Origin | Made in China |
What's in the Box
- DT550 DC Interface Tester × 1
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Frequently Asked Questions
Q: What types of DC devices is the Gaqqee DT550 digital voltmeter compatible with?
A: The DT550 is compatible with a wide range of DC-powered devices that use a standard DC port, including computer monitors, laptops, routers, network switches, and power tools. Its 5.5×2.5mm male connector is also compatible with 2.1mm sockets, making it highly versatile across different setups.
Q: Does the DT550 wattmeter require batteries or an external power supply?
A: No separate batteries are required. The DT550 draws its operating power directly from the DC circuit it is measuring (DC 4.5–50V), consuming less than 0.5W in operation, so it's always ready as soon as it's connected in-line.
Q: Can the DT550 ammeter handle current spikes above 6A?
A: Yes. While the continuous operating current range is 0–6A, the DT550 can handle short-term peak currents of up to 12A, giving you headroom for devices that draw transient bursts during startup or heavy load events.
Q: How do I switch between colour and monochrome display modes on the DT550?
A: Simply press and hold the screen rotation button for approximately 3 seconds while cycling through the display interfaces. This toggles the screen between colour and monochrome modes, allowing you to choose the best option for your viewing conditions.
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.