M255 Product FCC and IC Compliance Manual Publication: D3832, Rev AA © Landis+Gyr 2021 | Proprietary + Confidential 1
Limitation on Warranties and Liability Information in this document is subject to change without notice. This manual or any part of it thereof may not bereproduced in any form unless permitted by contract or by written permission of Landis+Gyr.
Introduction M255 supports both single channel and frequency hopping RF communication modes. The device has a two-way communication radio that complies to FCC Part 15.247, FCC Part 15.249, and ISED Canada Radio Standards Specifications RSS-210 and RSS-247. Dimension of the board is as shown in the figure below. The M255 module is not commercially available as a standalone product for third-party integration. It is intended for only Landis+Gyr series 5 residential gas products. Figure 1.
a b Figure 2. a) Bottom Side with RF Shield Lid Removed and b) Bottom Side with RF Shield Lid Installed In the figure below, the FCC ID, IC ID, and model name are shown as prints at the top of the board.
Figure 3. Top side with Antenna Product Overview This M255 is designed for Landis+Gyr series 5 gas product assemblies, which are assembled at a contract manufacturer. Gas products are battery operated devices. Figure 4.
Federal Communications Commission (FCC) Compliance Notice This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that maycause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digitaldevice, pursuant to Part 15 of the FCC Rules.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil e doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement..
Host FCC and IC Label Requirement On the final installation (e.g., on the enclosure of the final assembly) a label with the FCC and IC information as shown in the figure below must be visible. The font size is to be four-points or larger. Figure 5. FCC and IC Label Electrical Characteristics Battery: • Battery chemistry: Lithium Manganese • Battery pack construction: 2 battery cells, size A, connected in parallel • Nominal voltage: 3.
o • • Frequency Hopping Mode ▪ High Power: 27 dBm ▪ Normal Power (default): 24 dBm Receive sensitivity (typical) o 9.6 kbps: -112 dBm o 10 kbps: -112 dBm o 19.2 kbps: -110 dBm o 20 kbps: -110 dBm o 38.
