He managed to build his own monitor using an Arduino. The trick of this build has to do with how the system works. The panel includes an LED light that blinks 1000 times for each kWh of electricity.

Unipower Telecom's DPB1U circuit-breaker panels provide distribution and overload protection for one to 12 dc circuits. The panels are only one mounting-position high (1U, or 1.75 inches ... by a dual ...