AIN4-20mA Unit (STM32G030)

AIN4-20mA Analog Sensor Unit – Industrial Current Measurement for M5Stack Projects (NZ)

The AIN4-20mA Unit is a precision analog input module designed for measuring 4–20mA current signals in industrial and IoT applications. Powered by an STM32G030F6 microcontroller and supporting I2C communication, this sensor module integrates seamlessly with M5Stack controllers, making it a versatile choice for power monitoring, automation systems, and industrial control in New Zealand.

Its dual wiring option—via jumper caps—allows connection with both internally and externally powered 2-wire or 4-wire sensors. Equipped with galvanic isolation and a built-in op-amp, it ensures accurate signal reading and system protection in harsh environments or sensitive electrical setups.

🔧 Key Features & Benefits:

• ✔ Precise 4–20mA Current Measurement – Ideal for industrial-grade analog sensor input

• ✔ Powered by STM32G030F6 MCU – Stable, efficient performance for critical systems

• ✔ I2C Interface – Easy integration with M5Stack and Arduino platforms

• ✔ Built-In Isolation & Op Amp Circuitry – Safe, noise-free signal acquisition

• ✔ Flexible Sensor Support – Compatible with 2-wire & 4-wire analog current sensors

• ✔ Perfect for NZ Automation Projects – Energy management, power monitoring, motor control

📦 What’s Included:

• 1x AIN4-20mA Unit

• 1x Grove Wire (20cm)

• 1x VH3.96-4.0P Connector

• 3x Jumper Caps

📐 Specifications:

⚙️ Best For:

• 🔌 Power System Equipment Monitoring

• ⚙️ Motor Control and Automation

• 🌐 Industrial IoT Projects in NZ

• 🔍 Energy Efficiency and Current Sensing

🌟 Why Buy the AIN4-20mA Unit from Mr Tech (NZ)?

Whether you’re building a smart power monitor, retrofitting industrial machinery, or working on a custom IoT solution, the AIN4-20mA Unit delivers accurate, isolated current measurements and smooth integration with your M5Stack ecosystem—ready for New Zealand’s electrical and automation standards.