BOCU, the pump guardian that keeps thinking when the internet drops

Field notes

The BC-01 is described as a three-phase pump controller that measures current and voltage locally, waits for a fault to persist, then cuts and locks the relay. Its stated protection logic remains active without internet access, while the server records events and sends notifications. The example settings show 0.1-amp measurement resolution, a 7.0 A overcurrent limit, a 2.4 A undercurrent limit, and a three-second delay. The accompanying mobile application is identified as being in field testing.