Octopus Non-invasive AC current sensor TA12-100 Brick

The Octopus TA12-100 is a non-invasive AC current sensor brick from ElecFreaks. It uses a current transformer to measure AC current flowing through a wire without needing to cut or splice the circuit — simply clamp it around the conductor. The sensor outputs an analogue voltage proportional to the detected current.

Part of the Octopus electronic brick series, it features a standard 3-pin interface for plug-and-play connection to Arduino boards via sensor shields.

Key Features

• Non-Invasive Measurement – Clamp-on design measures AC current without breaking the circuit
• Wide Detection Range – Suitable for a variety of AC current sensing applications
• Fast Response – High sensitivity with stable, long-life operation
• Simple Interface – 3-pin analogue output (Signal, VCC, GND) for easy integration
• Octopus Brick Format – Compatible with Arduino sensor shields and Freaduino boards

Specifications

• Operating Voltage – 5 V
• Interface Type – Analogue
• Pin Definition – 1: Signal, 2: VCC, 3: GND
• Sensor Type – Current transformer (TA12-100)

Ideal For

• AC current monitoring and energy metering projects
• Arduino-based power measurement systems
• Home automation current sensing
• Educational electronics projects