The smart DIN rail module provides a way to remotely measure and control the energy consumption of individual circuits. It can measure electricity usage in 15-minute intervals and power usage in real-time, and circuits can be controlled on or off remotely via the internet. The module installs easily on a DIN rail and communicates wirelessly via RF to a gateway. It has features like power and usage measurements, remote on/off control, local on/off button, and LED indicators.