Landis Gyr M255 Gas Meter Endpoint Instructions
- June 5, 2024
- Landis Gyr
Table of Contents
Landis Gyr M255 Gas Meter Endpoint
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Information in this document is subject to change without notice. This manual
or any part of it thereof may not be reproduced in any form unless permitted
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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.
Board Dimension
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.
Module Model: M255
FCC ID: R7PEC6R1X2
IC ID: 5294A-EC6R1X2
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.
Products Containing the M255 PCBA
Federal Communications Commission (FCC)
Compliance Notice
This device complies with Part 15 of the FCC rules. Operation is subject to
the following two conditions:
- This device may not cause harmful interference, and
- This device must accept any interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Consult Landis+Gyr or an experienced radio technician for help
Industry Canada (IC) Compliance Notice
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.
RF Exposure Information
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 cm between the radiator and your body. This transmitter must not be co-located or operated in conjunction with any other antenna or transmitter.
Electrical Characteristics
Battery:
- Battery chemistry: Lithium Manganese
- Battery pack construction: 2 battery cells, size A, connected in parallel
- Nominal voltage: 3.0 V
- Capacity: 4800 mAh
DC Characteristics:
- Operating Voltage Range: 2.4 V – 3.6 V
- Typical Average Sleep Current (at 25°C): 2.2 µA
Radio Characteristics:
- Typical Antenna Gain: 0 dBi ± 2dB
- Frequency Range: 902.3 MHz – 927.8 MHz
- Modulation Format: 2-FSK, 2-GFSK
- Transmit Output Power (typical)
- Single Channel Mode (Tools Connection): -3 dBm
- Frequency Hopping Mode
- High Power: 27 dBm
- Normal Power (default): 24 dBm
- Receive sensitivity (typical)
- 9.6 kbps: -112 dBm
- 10 kbps: -112 dBm
- 19.2 kbps: -110 dBm
- 20 kbps: -110 dBm
- 38.4 kbps: -108 dBm
- 50 kbps: -108 dBm
- 150 kbps: -100 dBm
- Max Input Power, No Damage: + 10 dBm
References
- Energy Management Solutions | Smart Grid Technologies | Landis+Gyr
- Energy Management Solutions | Smart Grid Technologies | Landis+Gyr