Abstract: The generic_access service contains generic information about the device. All available Characteristics are readonly. Empty Example Abstract: The external appearance of this device. The values are composed of a category (10-bits) and sub-categories (6-bits). 0000 Abstract: The Device Information Service exposes manufacturer and/or vendor information about a device. Summary: This service exposes manufacturer information about a device. The Device Information Service is instantiated as a Primary Service. Only one instance of the Device Information Service is exposed on a device. Abstract: The value of this characteristic is a UTF-8 string representing the name of the manufacturer of the device. Silicon Labs Abstract: The value of this characteristic is a UTF-8 string representing the model number assigned by the device vendor. Blue Gecko Abstract: The SYSTEM ID characteristic consists of a structure with two fields. The first field are the LSOs and the second field contains the MSOs. This is a 64-bit structure which consists of a 40-bit manufacturer-defined identifier concatenated with a 24 bit unique Organizationally Unique Identifier (OUI). The OUI is issued by the IEEE Registration Authority (http://standards.ieee.org/regauth/index.html) and is required to be used in accordance with IEEE Standard 802-2001.6 while the least significant 40 bits are manufacturer defined. If System ID generated based on a Bluetooth Device Address, it is required to be done as follows. System ID and the Bluetooth Device Address have a very similar structure: a Bluetooth Device Address is 48 bits in length and consists of a 24 bit Company Assigned Identifier (manufacturer defined identifier) concatenated with a 24 bit Company Identifier (OUI). In order to encapsulate a Bluetooth Device Address as System ID, the Company Identifier is concatenated with 0xFFFE followed by the Company Assigned Identifier of the Bluetooth Address. For more guidelines related to EUI-64, refer to http://standards.ieee.org/develop/regauth/tut/eui64.pdf. Examples: If the system ID is based of a Bluetooth Device Address with a Company Identifier (OUI) is 0x123456 and the Company Assigned Identifier is 0x9ABCDE, then the System Identifier is required to be 0x123456FFFE9ABCDE. 000102030405 Custom service Custom characteristic 00 Custom characteristic 00 Custom characteristic 00