| ▲ | mjochim 4 hours ago | |
Electric meters often blink a signal LED for every X kWh, so other devices can read the signal. I'm not sure if this is used for bidirectional communications, though. | ||
| ▲ | bigfatkitten 3 hours ago | parent | next [-] | |
No, but they also have a separate infrared interface for this. | ||
| ▲ | NegativeLatency 3 hours ago | parent | prev [-] | |
Smart meters have a whole protocol | ||