GY‑471 MAX471 Current Detection Sensor Module High Precision DC Current Measuring Module For Arduino Over‑current Protection DIY Electronic Project

GY‑471 MAX471 Current Detection Sensor Module

📌 Product Overview

GY‑471 is a current‑voltage dual‑detection sensor module built with MAX471 chip. It can detect DC current and DC voltage simultaneously. The voltage measurement adopts resistor voltage divider circuit, which divides input voltage by 5 times. It works perfectly with Arduino and other mainboard controllers, reading analog signal to complete voltage and current sampling for load equipment. Widely used for power monitoring, battery detection, DC equipment current‑voltage measurement projects.

📋 Product Specifications

Item	Parameter
Chip	MAX471
DC Test Voltage(5V MCU System)	DC 3‑25V
DC Test Voltage(3.3V MCU System)	DC 3‑16.5V
DC Test Current Range	DC 0‑3A
Analog Resolution(10‑bit AD)	0.00489V
Minimum Detectable Voltage	0.02445V
Module Dimension	20mm * 20mm
Weight	3g
Working Temperature	-40℃ ~ +85℃

✨ Core Features

✅ Realize DC current and voltage dual‑function measurement ✅ Resistor voltage divider design, 5‑times voltage reduction for input terminal ✅ Based on MAX471 professional current sensing chip, stable sampling performance ✅ Simple analog signal output, easy to connect with Arduino / STM32 mainboard ✅ Compact 20*20mm small size, light weight, convenient for embedded installation ✅ Comes with terminal block and pin header for flexible wiring

⚠ Important Usage Notice

Kind reminder: If there are version differences or images have not been updated, please refer to the actual product. Thank you!

🛠 Application Scenarios

• DC power supply real‑time monitoring
• Battery voltage & current detection
• Motor load current test
• Electronic project power consumption measurement
• Arduino experimental teaching