I find it odd that they're using a Pi for this, it's not really a good solution for permanent installs, and is overly complex (and slow) for just monitoring a f

I find it odd that they're using a Pi for this, it's not really a good solution for permanent installs, and is overly complex (and slow) for just monitoring a few sensors. It could be done entirely on an ESP8266 or ESP32 for much less cost and complexity. Other design choices that I find strange: - Entire RaspberryPi available but only 2 CT inputs. - Requires 2 plugs, vs monitoring line voltage from the same input that powers the Pi. - LCD display on the front, when it's going to be installed somewhere I don't see it. - Boots from SD card, which will fail eventually, or get corrupted when power fails and comes back on rapidly multiple times as is typical during blackouts. - Custom 433mhz link, instead of using something standard like zigbee or wifi.