diff --git a/docs/developer/it-protocol/0x7B-identify-response/0xCD-unknown-identify-packet.md b/docs/developer/it-protocol/0x7B-identify-response/0xCD-unknown-identify-packet.md
index 9f2d916..cef89a6 100644
--- a/docs/developer/it-protocol/0x7B-identify-response/0xCD-unknown-identify-packet.md
+++ b/docs/developer/it-protocol/0x7B-identify-response/0xCD-unknown-identify-packet.md
@@ -7,10 +7,24 @@ The exact purpose of this packet and when (if at all) it's sent in the field is
 :::
 
 
-| Byte | Purpose           | Possible Values | Supported by mUART | Notes |
-|------|-------------------|-----------------|--------------------|-------|
-| 0    | CommandType       | 0xCD            |                    |       |
-| 1-15 | Unknown           | 0x03            |                    |       |
+| Byte  | Purpose           | Possible Values | Supported by mUART | Notes |
+|-------|-------------------|-----------------|--------------------|-------|
+| 0     | CommandType       | 0xCD            |                    |       |
+| 1-8   | Unknown           | 0x03            |                    |       |
+| 9     | Tonnage?          | 0x0-0x0         |                    |       |
+| 10-15 | Unknown           | 0x03            |                    |       |
+
+## Byte 9 Tonnage
+
+| Hex Flag (Byte 9) | Metric Capacity Class | Equivalent BTU Tonnage | Common Model Match Examples |
+| :---              | :---   | :--- | :--- |
+| **`0x00`**        | 1.5 kW | ~5,000 BTU (0.42 Tons) | MSZ-AP15VGK, MSZ-EF15VG |
+| **`0x01`**        | 1.8 kW | ~6,000 BTU (0.50 Tons) | MSZ-AP18VGK |
+| **`0x02`**        | 2.0 kW | ~7,000 BTU (0.58 Tons) | MSZ-AP20VG, MSZ-LN20VG |
+| **`0x03`**        | 2.5 kW | ~9,000 BTU (0.75 Tons) | MSZ-AP25VG, MSZ-LN25VG, MSZ-EF25VG |
+| **`0x04`**        | 3.5 kW | ~12,000 BTU (1.00 Ton) | MSZ-AP35VG, MSZ-LN35VG, MSZ-EF35VG |
+| **`0x05`**        | 4.2 kW | ~15,000 BTU (1.25 Tons) | MSZ-AP42VG |
+| **`0x06`**        | 5.0 kW | ~18,000 BTU (1.50 Tons) | MSZ-AP50VG, MSZ-LN50VG |
 
 ### Sample Packets