★ This device can measure the
no-load and loaded voltage of USB-powered equipment, as well as the
voltage and current of USB terminal devices during operation.
★ It utilizes an
imported single-chip microcomputer for sampling and voltage display. Extensive data processing is performed via software to ensure
accurate and stable display of data.
★ Featuring
full SMT (Surface Mount Technology) craftsmanship, the module boasts exquisite manufacturing and an
ultra-compact size.
★ It supports
cyclic display of current and voltage, making it simple, convenient, and highly practical to use.
★ It is
small and lightweight, requiring no additional power supply.
★ It can conveniently measure the
output voltage of USB ports and the operating current of connected devices.
★ It is
plug-and-play, with no need for an external power supply or additional accessories.
★ It is ideal for
detecting whether the voltage and current output from a USB charger meet standards.
★ Widely applicable in
factories, laboratories, and by individual users.
Technical Specifications:
Operating Range: Current (0 - 2.5A) - Detects whether the voltage of the mobile phone charger meets the standard of DC 5V.
Operating range: U = 3 - 7.5V I = 0 - 2.5A
Resolution: Voltage 10mV Current 10mA
Error: Voltage < ±1% Current < ±2%
Full-scale voltage drop: 200mV (when measuring current)
Operating temperature: 0 - 60℃
Product dimensions: 53*35*14mm
Packaging: PE bag
This power test instrument adopts a new generation 4.5-digit dual-integration type cyclic conversion integrated circuit, equipped with a precise bandgap reference source. It has an accurate range, high precision, stable operation, reliable performance, strong anti-interference ability, and can withstand high temperatures. It can be used to measure the power supply or power consumption of products such as USB interfaces, mobile phone chargers, and USB drives.
This product can measure the voltage of USB-powered devices when they are idle or under load, as well as the voltage and current when USB terminal devices are in operation.
2. Current and voltage display in a cycle, which is easy to use and highly practical.
3. Compact and portable, no need to connect an external power source.


We focus on three core product categories to meet diverse market demands:
1、Passive Components: We offer a comprehensive range of resistors, capacitors, inductors, and connectors, backed by stable stock and competitive pricing to support your continuous production needs.
2、Integrated Circuits (ICs) & Microcontrollers: Our portfolio features high-performance chips, including the ESP32 series, MCUs, and logic ICs. All components are sourced from authorized distributors to ensure guaranteed quality and authenticity.
3、PCB & PCBA Solutions: We provide complete supply chain support for printed circuit boards, ranging from prototype fabrication to mass production assembly, serving the IoT, consumer electronics, and industrial sectors.
Quality & Service Commitment
At Muren Technology, we prioritize authenticity and traceability. Every batch undergoes strict quality inspection with full lot traceability and customs declaration support. Whether you require samples, small-batch trials, or large-volume orders, our professional team ensures accurate delivery and long-term stable cooperation.