Matter Cluster 1026 — Temperature Measurement
Matter Cluster 1026 (0x0402) Temperature Measurement: attributes, commands, events, data types, shadow paths and bridge payload examples.
Matter Cluster 1026 — Temperature Measurement Cluster
Matter Cluster 1026, also written as 0x0402, is the Temperature Measurement Cluster.
This cluster provides an interface to temperature measurement functionality, including configuration and provision of notifications of temperature measurements.
Cluster Identity
| Field | Value |
|---|---|
| Cluster ID decimal | 1026 |
| Cluster ID hex | 0x0402 |
| Cluster name | Temperature Measurement |
| Cluster revision (Matter 1.6.1) | 6 |
| Role | application |
| Scope | Endpoint |
| PICS code | TMP |
| Typical endpoint | 1 |
Revision history
| Revision | Change |
|---|---|
| 1 | Mandatory global ClusterRevision attribute added |
| 2 | CCB 2241 2370 |
| 3 | CCB 2823 |
| 4 | New data model format and notation |
| 5 | Removed P quality |
| 6 | Added F quality to MinMeasuredValue, MaxMeasuredValue and Tolerance attributes |
Shadow Path Format
Cluster 1026 values in the device shadow use this format:
endpoint_id / 1026 / attribute_id
Example:
{
"1/1026/0": 1
}
| Part | Meaning |
|---|---|
1 | Endpoint ID |
1026 | Temperature Measurement cluster |
0 | MeasuredValue attribute |
Cluster 1026 Attributes
Cluster 1026 defines 4 attributes plus the global attributes. Conformance: M mandatory, O optional, a feature code means "mandatory when that feature is present", square brackets mean "optional when …".
| ID | Hex | Attribute | Type | Conformance | Access | Qualities | Default |
|---|---|---|---|---|---|---|---|
| 0 | 0x0000 | MeasuredValue | temperature | M | R (read: view) | nullable | — |
| 1 | 0x0001 | MinMeasuredValue | temperature | M | R (read: view) | nullable | — |
| 2 | 0x0002 | MaxMeasuredValue | temperature | M | R (read: view) | nullable | — |
| 3 | 0x0003 | Tolerance | uint16 | O | R (read: view) | — | 0 |
Global attributes
| ID | Hex | Attribute | Meaning |
|---|---|---|---|
| 65528 | 0xFFF8 | GeneratedCommandList | Response command IDs this server generates. |
| 65529 | 0xFFF9 | AcceptedCommandList | Command IDs this server accepts. |
| 65531 | 0xFFFB | AttributeList | Attribute IDs implemented. |
| 65532 | 0xFFFC | FeatureMap | Implemented optional features (see above). |
| 65533 | 0xFFFD | ClusterRevision | Cluster revision implemented; 6 for a Matter 1.6.1 device. |
Attribute Details
Attribute 0 / 0x0000 — MeasuredValue
Path example:
1/1026/0
Indicates the measured temperature. The null value indicates that the temperature is unknown.
| Property | Value |
|---|---|
| Type | temperature |
| Conformance | M |
| Access | R (read: view) |
| Qualities | nullable |
| Constraint | MinMeasuredValue to MaxMeasuredValue |
Example:
{
"1/1026/0": 1
}
Attribute 1 / 0x0001 — MinMeasuredValue
Path example:
1/1026/1
Indicates the minimum value of MeasuredValue that is capable of being measured. See Measured Value for more details. The null value indicates that the value is not available.
| Property | Value |
|---|---|
| Type | temperature |
| Conformance | M |
| Access | R (read: view) |
| Qualities | nullable |
| Constraint | -27315 to 32766 |
Example:
{
"1/1026/1": 1
}
Attribute 2 / 0x0002 — MaxMeasuredValue
Path example:
1/1026/2
This attribute indicates the maximum value of MeasuredValue that is capable of being measured. See Measured Value for more details. The null value indicates that the value is not available.
| Property | Value |
|---|---|
| Type | temperature |
| Conformance | M |
| Access | R (read: view) |
| Qualities | nullable |
| Constraint | min compute |
Example:
{
"1/1026/2": 1
}
Attribute 3 / 0x0003 — Tolerance
Path example:
1/1026/3
See Measured Value.
| Property | Value |
|---|---|
| Type | uint16 |
| Conformance | O |
| Access | R (read: view) |
| Constraint | max 2048 |
| Default | 0 |
Example:
{
"1/1026/3": 1
}
Cluster 1026 Commands
Cluster 1026 defines no commands. It is read (and, for writable attributes, written) through attribute access only.
Cluster 1026 Events
Cluster 1026 defines no events.
SmartphoneKey Notes
- Temperature is reported in hundredths of a degree Celsius:
2150= 21.50 °C. - Shadow paths follow
endpoint/1026/attribute; attribute values that the device reports as unreadable are written asn/a. - Attribute IDs, command IDs and enum values on this page come from the CSA Matter 1.6.1 data model; descriptions are condensed from the specification text.