RFM offers a full set of custom embedded wireless networking solutions like Zigbee wireless mesh sensor networks, RF modules, IC transceiver, IC transmitters and IC receivers. RFM, Inc. manufactures low power wireless and RF radio modules, wireless mesh nodes for distributed sensing on distributed sensor networks. Low Power radio, n../arrowband and short range devices, front end saw filters, active RFID, RFIC, coupled resonator filters, single silicon chips in the 70MHZ and 300-1000Mhz range.

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DNT900
900 MHz Frequency Hopping Module

Other top DNT900 Applications

  • Irrigation Control
  • SCADA for monitoring and control
  • Scoreboards and Electronic Sign
  • Industrial Remote Control
  • Energy Management

    * The DNT2400 has the same form factor and pin out as the DNT900 and can be used for this application in the 2.4 GHz band


    		•  
    see all DNT900 part #'s below
    Irrigation Monitoring System

    Application Overview

    Checking on the health of unmanned irrigation systems is essential to prevent regular trips to the field to determine if the system is still operating correctly or to immediately shutdown the system in event of a failure or breakdown of the system.

    Various sensors measuring water flow, pressure, voltages and other variables are connected to a DNT900 radio module which then transmits these readings periodically to another DNT900 radio module embedded in a central master controller at the farm offices.

    The host application then monitored these parameters and took appropriate action if the ranges were outside of accepted norms. In event of a failure the irrigation system and other equipment like the water pump can be switched off or restarted as necessary without having to physically go to the site.

    Applicable Product Features

    The DNT900 radio module’s multiple input/output ports, auto-reporting and ability to transmit data over large distances were some of the key features for the choice of this module.

    SPECIFICATIONS

    Radio Characteristics:
    Frequency:
    Transmit Power:
    RF Data Rates:
    Receiver Sensitivity:

    Data Encryption:
    Network:

    Environmental:

    Power Supply:
    Dimensions:

    Mounting Option:
    RF Connection:
    Input /Outputs:
    Interface:
    Certification:     		FHSS (Frequency Hopping Spread Spectrum)
    902.75 – 927.25 MHz
    up to 1 W selectable
    38.4, 115.2, 200, 500 Kbps
    -108 dBm 10-5 BER at 38.4 Kbps
    -94 dBm 10-5 BER at 500 kbps
    AES-128
    Point to Point, Point to Multipoint, Peer-to-Peer, Tree
    routing
    -40 °C to +85 °C
    10 - 90% humidity, non-condensing
    3.3 to 5 VDC
    2.01 x 1.26 inches (52.07 x 32.00 mm) for DNT900C
    2.05 x 1.36 inches (52.07 x 34.54 mm) for DNT900P
    Pinned and Surface Mount Versions
    U.FL Coaxial Connector
    6 GPIO, 3 ADC and two DAC outputs
    UART, SPI
    FCC, Canadian IC certified

    HOW TO BUY
    RFM products are sold through a world-wide network of manufacturer's reps and distributors. Go to the RFM website at www.RFM.com and visit the "How to Buy" section to locate a sales / distribution partner near you.

    Part Number Description
    DNT900P DNT900 FHSS Module - Pinned Version
    DNT900C DNT900 FHSS Module – Surface Mount
    DNT900DK DNT900P FHSS Module - Developer's Kit