HMCharacteristic
E853035
HMCharacteristic is a HomeKit framework class in Apple’s HomeKit API that represents an individual, configurable property or attribute of a smart home accessory, such as a light’s brightness or a thermostat’s temperature.
All labels observed (1)
| Label | Occurrences |
|---|---|
| HMCharacteristic canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10266977 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: HMCharacteristic Context triple: [HM, prefixOf, HMCharacteristic]
-
A.
CBCharacteristic
CBCharacteristic is a CoreBluetooth class representing a specific piece of data (a characteristic) on a remote Bluetooth Low Energy peripheral’s service, including its value and associated properties.
-
B.
CBPeripheralManager
CBPeripheralManager is an iOS CoreBluetooth class that lets an app act as a Bluetooth Low Energy peripheral, managing advertising and the publication of services and characteristics.
-
C.
HomeKit Accessory Protocol
HomeKit Accessory Protocol is Apple's communication protocol that enables smart home accessories to securely connect with and be controlled by Apple devices within the HomeKit ecosystem.
-
D.
Bluetooth Core Specification Vol 3 Part H
Bluetooth Core Specification Vol 3 Part H is a section of the Bluetooth standard that defines key security procedures and protocols, including those used for secure connections in Bluetooth Low Energy.
-
E.
CoreBluetooth
CoreBluetooth is an Apple framework that enables apps to communicate with Bluetooth Low Energy (BLE) devices for tasks like data exchange and peripheral control.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: HMCharacteristic Target entity description: HMCharacteristic is a HomeKit framework class in Apple’s HomeKit API that represents an individual, configurable property or attribute of a smart home accessory, such as a light’s brightness or a thermostat’s temperature.
-
A.
CBCharacteristic
CBCharacteristic is a CoreBluetooth class representing a specific piece of data (a characteristic) on a remote Bluetooth Low Energy peripheral’s service, including its value and associated properties.
-
B.
CBPeripheralManager
CBPeripheralManager is an iOS CoreBluetooth class that lets an app act as a Bluetooth Low Energy peripheral, managing advertising and the publication of services and characteristics.
-
C.
HomeKit Accessory Protocol
HomeKit Accessory Protocol is Apple's communication protocol that enables smart home accessories to securely connect with and be controlled by Apple devices within the HomeKit ecosystem.
-
D.
Bluetooth Core Specification Vol 3 Part H
Bluetooth Core Specification Vol 3 Part H is a section of the Bluetooth standard that defines key security procedures and protocols, including those used for secure connections in Bluetooth Low Energy.
-
E.
CoreBluetooth
CoreBluetooth is an Apple framework that enables apps to communicate with Bluetooth Low Energy (BLE) devices for tasks like data exchange and peripheral control.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
HomeKit API type
ⓘ
class ⓘ |
| associatedWith | HMAccessory ⓘ |
| belongsTo | HMService NERFINISHED ⓘ |
| conformsToLanguage | Objective-C NERFINISHED ⓘ |
| definedInFramework | HomeKit NERFINISHED ⓘ |
| definedInModule | HomeKit NERFINISHED ⓘ |
| documentationURL | https://developer.apple.com/documentation/homekit/hmcharacteristic ⓘ |
| exampleUsage |
light brightness characteristic
ⓘ
thermostat temperature characteristic ⓘ |
| frameworkOwner | Apple Inc. NERFINISHED ⓘ |
| hasMethod |
enableNotification:completionHandler:
ⓘ
readValueWithCompletionHandler: ⓘ updateAuthorizationData:completionHandler: ⓘ writeValue:completionHandler: ⓘ writeValue:completionHandler: (Swift name writeValue(_:completionHandler:)) ⓘ |
| hasProperty |
characteristicType
ⓘ
isNotificationEnabled ⓘ isNotificationSupported ⓘ isReadable ⓘ isWritable ⓘ localizedDescription ⓘ metadata ⓘ properties ⓘ service ⓘ value ⓘ |
| hasRelationship |
each HMCharacteristic belongs to exactly one HMService
ⓘ
multiple HMCharacteristic instances can belong to one HMService ⓘ |
| introducedInOS |
iOS 8
ⓘ
macOS 10.10 ⓘ tvOS 10 ⓘ watchOS 2 NERFINISHED ⓘ |
| isAvailableInLanguage | Swift NERFINISHED ⓘ |
| lifecycle | managed by HomeKit home configuration ⓘ |
| namespace | Apple HomeKit NERFINISHED ⓘ |
| platform |
iOS
ⓘ
macOS ⓘ tvOS NERFINISHED ⓘ watchOS NERFINISHED ⓘ |
| represents |
accessory characteristic
ⓘ
attribute of a HomeKit accessory ⓘ configurable property of a HomeKit accessory ⓘ |
| supports | notifications for value changes ⓘ |
| threadSafety | intended for use on main thread in UI apps ⓘ |
| usedFor |
reading accessory state
ⓘ
subscribing to value changes ⓘ writing accessory configuration ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: HMCharacteristic Description of subject: HMCharacteristic is a HomeKit framework class in Apple’s HomeKit API that represents an individual, configurable property or attribute of a smart home accessory, such as a light’s brightness or a thermostat’s temperature.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.