USB 2.0 Colour Screen Tester UM24C with Bluetooth Option

This USB 2.0 colour screen tester measures voltage, current, temperature, and load resistance, making it a practical tool for checking USB power sources, cables, and connected devices. It supports QC2.0 and QC3.0 fast charge identification, so you can see whether a charger and cable are using the expected fast-charging protocol. The colour screen displays readings clearly, and the tester can store up to 1049 data points for later reference. It is available in two versions: No Bluetooth and With Bluetooth. The With Bluetooth model includes Bluetooth communication; the No Bluetooth model does not. This description covers the UM24C tester and its stated functions, measurements, and options.

Features and Construction

The tester combines voltage, current, temperature, and resistance measurement in one USB device. Its colour screen has six brightness levels, and the screen-off delay can be set from 0 to 9 minutes. The input range and measurement resolutions are stated in the source data, so you can judge whether it suits your testing needs.

Material and Build

The source text does not specify the housing material or internal construction beyond the product type and electronic function. It is a USB 2.0 colour screen tester with a Bluetooth communication board available on the With Bluetooth version. No further material claims are made here because the source does not provide them. For practical use, treat it as an electronic measuring device and keep it within the stated input limits.

Size and Practical Fit

No physical dimensions or weight are given in the source text. The relevant fit is electrical: input voltage from 4.50V to 24.00V and input current from 0 to 3.000A. The tester connects in line between a USB power source and a load. Because size data is absent, this description does not estimate length, width, or weight. The colour screen and adjustable brightness settings are the main user-facing physical details provided.

Uses and Placement

This tester is used for checking USB power delivery, current draw, temperature, and load resistance. It can help identify whether a charger is operating within expected voltage and current ranges, and whether QC2.0 or QC3.0 fast charging is being recognised. It is suitable for bench testing, DIY electronics, and routine checks of USB cables and adapters.

Event or Professional Use

For professional or workshop use, the tester provides voltage resolution of 0.01V and current resolution of 0.001A. Voltage accuracy is ±(0.2%+1 word), and current accuracy is ±(0.8%+3 words). It can measure load positive resistance from 1.50 to 9999.90 and temperature from -10°C to 100°C / 0°F to 200°F. These figures support repeatable checks where a record of readings is useful, and the 1049 data storage points allow measurements to be kept.

Everyday Home Use

At home, the tester can be used to compare USB chargers, cables, and power banks. It shows input voltage and current on the colour screen, and the brightness can be set from 0 to 5. The delay screen-off time can be set from 0 to 9 minutes, which helps when you need the display to stay on during a test. Fast charge identification for QC2.0 and QC3.0 can show whether a compatible device is fast charging as expected.

Benefits and Buying Value

The main value is in measuring several parameters with one USB tester: voltage, current, temperature, and load resistance. It also stores up to 1049 data points and supports QC2.0 and QC3.0 identification. The choice of No Bluetooth or With Bluetooth lets you select the version that matches your setup.

Reuse and Low Maintenance

The source text does not provide care instructions or maintenance schedules. As an electronic measuring tool, it should be kept within the stated input voltage and current limits. No cleaning or servicing claims are made here because they are not supported by the source. The adjustable screen brightness and screen-off delay are user settings that can be changed as needed.

Why Choose This Product

Choose this tester if you need a USB 2.0 colour screen device that measures voltage from 4.50V to 24.00V and current from 0 to 3.000A, with QC2.0 and QC3.0 fast charge identification. It also measures temperature from -10°C to 100°C / 0°F to 200°F and load positive resistance from 1.50 to 9999.90. The With Bluetooth option adds Bluetooth communication, while the No Bluetooth option omits it. The package includes one colour screen tester.