Murata Wireless

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900 MHz Transceiver Module

Click here if you need additional technical information,
to inquire about samples or to discuss your custom needs.

• 900 MHz Frequency Hopping Spread Spectrum Transceiver
• Point-to-Point, Point-to-Multipoint, Peer-to-Peer and Tree Routing Network Topologies
• Transmitter Power Configurable from 1 mW to 1 W
• RF Data Rate Configurable from 38.4 to 500 kbps
• Serial Port Rate up to 460.8 kbps for Streaming Applications and Master/Slave SPI port
• 128-Bit AES Encryption
• Separate Serial Port for Diagnostics
• Analog and Digital I/O for Sensor Applications
• FCC and Canadian IC Certified for Unlicensed Operation
• Sleep Modes and Auto-reporting
• CSMA Modes for Unlimited Number of Nodes
• TDMA Mode for Guaranteed Bandwidth
• Pin-for-pin Compatible with Murata DNT2400 2.4GHz Module
Click here if you need additional technical information,
to inquire about samples or to discuss your custom needs.

download data sheet Rev Date 06/11/09

download product manual

  • Features
  • AppNotes
  • Dev Kit
  • Buy Now
The DNT900 series transceivers provide highly reliable wireless connectivity for point-to-point, point-to-multipoint, peer-to-peer, and tree routing applications.

Frequency hopping spread spectrum (FHSS) technology ensures maximum resistance to multipath fading and robustness in the presence of interfering signals, while operation in the 900 MHz ISM band allows license-free use in the US, Canada, South America, Israel, Australia and New Zealand. The DNT900 supports all standard serial data rates for host communications from 1.2 to 460.8 kb/s through a standard serial port as well as a SPI port configurable as Master or Slave. On-board data buffering and an error-correcting air protocol provide smooth data flow and simplify the task of integration with existing applications. Key DNT900 features include:

• Multipath fading resistant frequency hopping technology with up to 50 frequency channels (902 to 928 MHz).
• Selectable 1, 10, 100, 250, 500 or 1000 mW transmit power with a firmware interlock of 85 mW maximum for 500 kb/s operation.
• Support for point-to-point or point-to-multipoint applications with tree routing for extended coverage.
• AES-128 encryption secures data
• FCC 15.247 certified for license-free operation.
• Separate Serial Port for Diagnostics
• 40 mile plus range with omni-directional antennas (antenna height dependent).
• Dynamic TDMA slot assignment that maximizes throughput and CSMA modes that maximizes network size.
• Transparent ARQ protocol with data buffering ensures data integrity
• Simple serial interface handles both data and control at up to 460.8 kb/s plus a Master/Slave SPI port

Development Kit
Application Notes                                                                                                 see All Product Application Notes
    Wireless Temperature Sensor
    A Solar Energy Harvester for Wireless Sensor Networks
    Sizing Solar Energy Harvesters for Wireless Sensor Networks
White Papers
    Wireless Communications for Industrial Applications
    This paper examines the unique requirements and challenges of wireless communications in an industrial setting and provides an overview of RFM wireless products designed specifically for these applications. The information presented serves as a guide for systems integrators and end users responsible for factory floor automation, industrial/PLC control, SCADA, telemetry and related data communications applications. (~ 136 KB, Adobe PDF format.)
    Wireless Transceivers—Make or Buy?
    In choosing to add wireless data capability to a new or existing product, every designer faces a critical decision: whether to engineer the functionality in-house or buy a ready-made module for the application. This paper provides a cost analysis to explore the relative merits of each approach. (~ 160 KB, Adobe PDF format)
Case Studies
    Digital sign control
    A maker of commercial electronic signs chose RFM HopNet wireless serial modems to replace costly cabling runs.
    Heavy duty automation
    Wireless communications from databases to crane scales automate aluminum manufacturing.
    Parking control
    Upgrading a parking facility to monitor space availability without cutting cable trenches.
Developer Kits
The DNT900 Development Kit is available as part number: DNT900DK
The DNT900 FHSS transceiver module is a low cost, high-power solution for point-to- I/O point and point-to-multipoint wireless systems in the 900 MHz ISM band. The RF output power of the DNT900 can be set from 1 mW to 1 W, and the RF data rate can be set from 38.4 to 500 kb/s. The DNT900 receiver includes a low-noise preamplifier protected by two SAW filters, providing an excellent combination of receiver sensitivity and out-ofband interference rejection. The DNT900 module includes analog, digital and serial I/O, providing the flexibility and versatility to serve applications ranging from cable replacements to sensor networks. The DNT900 transceiver module is easy to integrate and provides robust wireless communications up to 40 miles in lineof- sight installations and tree routing for extended coverage.
RFM Part   Frequency   Description  
900 MHz
(2) DNT900P radios, (2) DNT900 development boards, (2) 2 dBi dipole antennas, (2) 120/240 VAC 9 V wall-plug power suppliers, (2) 9 V batteries, (2) RJ-45/DB-9F cable assemblies, (1) RJ-11/DB-9F cable assembly, (2) A/B USB cables, DNT900DK documentation and software CD
Mouser Avnet Digi-Key Future Electronics North America Countries

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