Command 0xA6 - Kumo Sensor Status
Sent from the MHK2 to a Kumo Cloud unit, captured via logic analyzer. Only sent under certain conditions, though it is currently unclear what those are.
note
The information about this packet is speculative at the moment and should not be used for active implementations. If you have any extra sensor hardware, please reach out or add your packets so that we can investigate further!
| Byte | Purpose | Possible Values | Supported by mUART | Notes |
|---|---|---|---|---|
| 0 | Command Type | 0xA6 | No | |
| 1 | Flags? | 1C | ||
| 2-3 | ??? | 0x00 | Flag 0x01 (?) | |
| 4 | ??? | 00 | Flag 0x02 (?) | |
| 5 | % Indoor Relative Humidity | 0x00 to 0x64 (?) | No | Flag 0x04 |
| 6 | MHK2 Battery State (?) | 0x00 to 0x04 | No | Flag 0x08 |
| 7 | Connected Sensor Flags (?) | See below | Flag 0x10 | |
| 8 | ??? | 00 | Flag 0x20 | |
| 9 | ??? | 00 | Flag 0x40 |
Sample Packets
[FC.41.01.30.10] A6.1C.00.00.00.34.00.01.00.00.00.00.00.00.00.00 [87] // captured twice with logic analyzer
[FC.41.01.30.10] A6.1C.00.00.00.30.00.01.00.00.00.00.00.00.00.00 [8B]
[FC.41.01.30.10] A6.1C.00.00.00.28.00.05.00.00.00.00.00.00.00.00 [8F] // with IAS connected
Battery States
| Value | Meaning |
|---|---|
| 0x0 | OK |
| 0x1 | Low |
| 0x2 | Critical |
| 0x3 | Replace |
| 0x4 | Unknown |
Device Flags
Unconfirmed, needs validation from people who have relevant hardware.
| Flag | Device | Known Models |
|---|---|---|
| 0x01 | Thermostat | MHK2/MHK1 (?) |
| 0x02 | Outdoor Sensor (?) | Unknown, possibly MOS1? |
| 0x04 | Indoor Sensor | RCHTSENSOR |