What is a pulse output energy meter and how can you use it to analyze your bill?
![flashing led](https://thingslog-stage.lkjh.me/wp-content/uploads/2021/08/flashing-led.jpg)
Any energy meter has a pulse output option. The pulse output could be optical – a blinking diode (flashing led) used for calibrating the unit or electrical (so-called S0) pulse output.