Packet specification

| From | To | OpCode | Payload |

| 4 bytes | 4 bytes | 1 byte | < 250 bytes |

OpCodes

| OpCode | Description |

| 0 | NoOp, test packet. | | 1 | MQQT message: JSON with topic, | | 2 | Set boolean state on the T node: Payload is 2 bytes. First byte is device on To node, second byte is value to set. | | 3 |