Bluetooth GATT Characteristic Reference
Supported New Alert Category (0x2A47)
This characteristic uses the Alert Category ID Bit Mask Characteristic. If bit(s) is/are set, it means the server supports the corresponded categories for new incoming alert.
Quick Summary
Payload length is profile-defined or variable based on field formats. This page is generated from official GATT XML and presented as implementation-ready guidance.
At a Glance
Key reference details for BLE implementation, interoperability testing, and AI-assisted troubleshooting.
| Property | Value |
|---|---|
| Name | Supported New Alert Category |
| UUID | 0x2A47 |
| Type | org.bluetooth.characteristic.supported_new_alert_category |
| XML Root | Characteristic |
| Source File | org.bluetooth.characteristic.supported_new_alert_category.xml |
| Field Count | 1 |
Field Specification
Parsed field definitions from the source XML value structure.
| Field | Requirement | Format | Unit | Exponent | Notes |
|---|---|---|---|---|---|
| Category ID Bit Mask | Mandatory | N/A | - | - | - |
Byte Layout and Decode
Payload length is profile-defined or variable based on field formats.
function decodePayload(dataView, offset = 0) {
// Parse category_id_bit_mask (N/A) according to Bluetooth format rules.
return { category_id_bit_mask };
}Use Cases and Integration Notes
BLE Telemetry
Map characteristic values into dashboards and alerts for device observability.
Firmware Regression
Compare decoded fields across builds to detect protocol or scaling changes.
App Integration
Build stable parsing paths that convert raw payloads into typed app models.
Implementation Checklist
- Validate payload length and mandatory fields before decode.
- Decode with Bluetooth-specified signedness, unit, and exponent handling.
- Convert units at presentation boundaries to avoid drift in business logic.
- Persist raw packets and decoded values for reproducible troubleshooting.
FAQ
What is Supported New Alert Category in Bluetooth GATT?
Supported New Alert Category is defined as a Bluetooth GATT characteristic entry with type org.bluetooth.characteristic.supported_new_alert_category and UUID 0x2A47.
What UUID identifies Supported New Alert Category?
The UUID for Supported New Alert Category is 0x2A47.
How should I parse Supported New Alert Category?
Payload length is profile-defined or variable based on field formats.
Where does this definition come from?
This page is generated from the Bluetooth SIG mirror XML in the oesmith/gatt-xml repository.
How does this page support BLE implementation?
The page combines structured tables, practical Q&A, and JSON-LD metadata to help teams validate integrations and troubleshoot consistently.