ZMCT103C is a hall effect transformer for measuring AC Current. This module uses the transformer to convert AC Mains Current to a small measurable current in the ratio 1000:1. It is Great for building AC sensing, energy monitors, loggers, home automation systems, etc The transformer’s 2 output pins which output the low current signal are broken out to 2 header pins which can be easily connected to an external circuit. Using a simple current-to-voltage converter, you can connect the output to a microcontroller to measure the AC Current. Note: We have a plug-and-play model of this current sensor with all required external electronics included. You can use this module to directly convert AC current to a 0-5V Voltage signal. Technical Specifications: Ratio: 1000: 1 Linearity: 0.2% Rated input current: 5A Rated output current: 5mA The linear range: 0 ~ 10A (100 ohms) Onboard precision microcurrent transformer. Onboard sampling resistor. The module can measure AC currents less than 5A, the corresponding analog output 5A/5mA. Onboard precision microcurrent transformer. Onboard sampling resistor. Package Includes: 1 Piece –5A range of single-phase AC current sensor module