RF Code M250 Environment Monitoring Fixed Gateway (Reader)

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With a modular design and low price, the M250 fixed gateway provides an economical solution to a wide variety of asset tracking problems.

M250 gateways are dual-channel radio receivers tuned to 433.92 MHz. The gateways are programmed, calibrated and dedicated to interpreting and reporting the radio frequency messages emitted by RF Code sensors. Sensor transmissions are processed in real-time to quickly locate and identify tagged assets or personnel in defined areas. M250 gateways are compatible with wired and wireless networks for rapid integration into an organization’s IT infrastructure.RF Code’s patented communication protocols allow for very high sensor densities. Large populations of sensors can be monitored using a single gateway. A single M250 gateway will process in excess of 140 events per second, or 1,400 sensors monitored simultaneously with 10-second beacon intervals. Gateways running in ‘exception reporting’ mode will report only those events that represent a change in asset / location status; this significantly reduces the amount of software data processing. The M250 also supports multiple simultaneous network connections enabling multiple applications to consume sensor event information. For example, the M250 can be utilized by RF Code’s CenterScape, Asset Manager, and Zone Manager applications all at the same time.

  • Full Function Ethernet port (10/100, full duplex)
  • Optional integrated WiFi 802.11b/g
  • Standard 110/220 Power Supply and On-board Power over Ethernet (PoE)
  • 32 MB RAM and On- board sensor database up to 65,000 Sensor IDs
  • Instantaneous Sensor Reporting
  • Software-Configurable Range Control Settings
  • Small Footprint and Flexible Mounting Options Direct API Interface Available
  • High Throughput Performance Supports Large Sensor Populations
  • Ability to Support Multiple Simultaneous Connections
  • Optional Antenna Configurations for Customized Coverage Zones
  • Fully Compatible with Zone Manager, Asset Manager, and CenterScape

Operating Frequency- 433.92 MHz
Ethernet- 10/100 Full Duplex via RJ45
Wireless Ethernet- via 802.11b and 802.11g (option)
Protocol- TCP/IP
USB- USB-A and USB-B serial
Receiver Sensitivity- > 50 dB dynamic range (-58 dB to -108 dB)
Default Range Settings- 8 factory programmable range settings in 5 dB increments
Customizable Control Range- settings selectable in 1 dB increments
Sensor Density- Up to 140 sensor reports per second (TRPS)
Group Code Management- Up to 16 sensor group codes can be monitored simultaneously


Helical Antenna- Up to 150 feet (45 m)
Omni-angle Antenna- Up to 300 feet (91 m)
YAGI Antenna- Up to 1,000 feet (300m)


Width- 5.72 in (145 mm)
Depth- 5.72 in (145 mm)
Height- .98 in (25 mm)
Weight- 24.7 oz (700 g)
Construction- Powder coated steel enclosure
Mounting- Ceiling, wall-mount or desktop operation


Operating Temperature- -20° C to +70° C
Storage Temperature- -40° C to +80° C
Operating Humidity- 10% to 90% non-condensing


Power- 12-24V DC (non-PoE operation)
Power Consumption- 2.5 W (typical), <3 W PoE
Power Supply- 100-240 V with IEC connector
Optional Power- On-board Power over Ethernet (PoE) adapter (IEEE 802.3af-2003 compliant)

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