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EnOcean does not assume responsibility for use of modules described and limits its liability to the replacement of modules determined to be defective due to workmanship. Devices or systems containing RF components must meet the essential requirements of the local legal authorities.
STM 550B / EMSIB - EASYFIT MULTISENSOR FOR IOT APPLICATIONS (2.4 GHZ BLE) General description This user manual describes the functionality of the STM 550B EnOcean multisensor module, of the STM 550B Installation Kit and the EMSIB Easyfit Multisensor. The term “STM 550B” is used throughout this user manual to describe both STM 550B mul- tisensor module, STM 550B Installation Kit and EMSIB Easyfit Multisensor unless otherwise noted.
Functional overview Product description The energy-harvesting multi-sensor module STM 550B from EnOcean provides wireless sens- ing functionality without batteries. Power is provided by an integrated solar cell. STM 550B transmits sensor data using the 2.4 GHz Bluetooth Low Energy standard.
Figure 15 below. Figure 15 – Backup battery slot with polarity markings EnOcean recommends Renata CR1632 due to its low self-discharge and high capacity. Gloves should be used when installing a backup battery to avoid contamination of the isolation area between the contacts that could lead to a higher self-discharge.
NFC as described in chapter 9.5.4. The structure of STM 550B static addresses is therefore as follows: The upper 2 bytes of the source address are for EnOcean Bluetooth sensors always ◼ set to 0xE500 to enable filtering according to product type The lower 4 bytes are uniquely assigned to each device.
Manufacturer ID (2 byte) ◼ The Manufacturer ID field is used to identify the manufacturer of BLE devices based on assigned numbers. EnOcean has been assigned 0x03DA as manufacturer ID code. Sequence Counter (4 byte) ◼ The Sequence Counter is a continuously incrementing counter used for security pro- cessing.
◼ NFC SW with read, write, PIN lock, PIN unlock and PIN change functionality ◼ For PC applications, EnOcean recommends the TWN4 Multitech 2 HF NFC Reader with sim- ple CDC interface (order code T4BT-FB2BEL2-SIMPL) from Elatec RFID Systems (sales- rfid@elatec.com).
◼ The 16 bit OEM field identifies the manufacturer of the device so that manufacturer- specific layout implementations can be determined. For EnOcean GmbH this field is set to 0x000B DEVICE_IDENTIFIER ◼ The 24 bit DEVICE_IDENTIFIER field identifies an individual device from the range of devices manufactured by the manufacturer specified in the OEM field.
The register MANUFACTURER_ID identifies the manufacturer of the device using the 16 bit company identifier assigned by Bluetooth SIG. The default setting of 0x03DA identifies EnOcean GmbH as the manufacturer of the device. At the time of writing, the list of assigned company identifiers could be found here: https://www.bluetooth.com/specifications/assigned-numbers/company-identifiers/...
12.1.1 Declaration of conformity Hereby, EnOcean GmbH, declares that this radio equipment is in compliance with the essen- tial requirements and other relevant provisions of Directive 2014/53/EU. A copy of the Dec- laration of Conformity can be obtained from the product webpage at www.enocean.com...
Thus, STM 550B and EMSIB containing the TCM 515B radio module can be operated in the United States without additional Part 15 FCC approval (approval(s) for unintentional radiators may be required for the OEM’s finished product), under EnOcean’s FCC ID number if the OEM requirements are met.
STM 550B / EMSIB - EASYFIT MULTISENSOR FOR IOT APPLICATIONS (2.4 GHZ BLE) 12.2.4 FCC OEM requirements In order to use EnOcean’s FCC ID number, the OEM must ensure that the following conditions are met: The Original Equipment Manufacturer (OEM) must ensure that FCC labeling require- ◼...
STM 550B / EMSIB - EASYFIT MULTISENSOR FOR IOT APPLICATIONS (2.4 GHZ BLE) Intermediate parameters The RFC3610 implementation used in EnOcean BLE products derives four internal parameters – Nonce, A0, B0, B1 and B2 – based on the telegram specific input data and the constant internal parameters.
T_0 using four AES-128 and three XOR operations. The algorithm execution sequence is shown in Figure 76 below. The first four bytes of T_0 are then used to authenticate EnOcean BLE multi-sensor data telegrams.
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