2.4 GHz RS-232/RS-485 Wireless Modem
The RFU-2400 is a 2.4 GHz radio frequency modem that provides RS-232 and RS-485 port interfaces. It is designed to act as a wireless bridge to convert signals between serial and wireless formats, and is great for applications when the physical wire deployment is inconvenient. The RFU-2400 makes it easy to build a low-cost data acquisition and control application between a host and a range of remote sensors via wireless communication.

The RFU-2400 is a spread spectrum radio frequency (RF) modem based on the IEEE 802.15.4 standard. The IEEE 802.15.4 standard is operating on the ISM bands which uses a transmission frequency range between 2405 and 2480 MHz. A total of 16 channels are available and each with a channel separation of 5 MHz. Two operating modes are also supported, including Peer-to-Peer (P2P) mode, which allows full-duplex communication, and Broadcast mode, which allows half-duplex functionality in multi-point communication.

Request For Quotation




    • ISM 2.4 GHz Operating Frequency
    • Direct Sequence Spread Spectrum (DSSS) RF technology
    • Wireless Transmission Range up to 700 m (Default)
    • RS-232/RS-485 Interface Supported
    • Half-duplex communication up to 115200 bps
    • Full-duplex communication up to 57600 bps
    • Fully External Switch for the Hardware Configuration
    • Surge and ESD Protection
    • DIN-Rail Mountable

    Hardware Specifications

    Wireless Wireless
    Modulation OQPSK (Offset Quadrature Phase-shift Keying)
    Spread Spectrum DSSS (Direct-Sequence Spread Spectrum)
    Channels 16
    Sensitivity -96 dBm
    Transmission Power 11 dBm (Default): 19 dBm (Max.)
    Antenna 2.4G – 5 dBi Omnidirectional Ante
    Transmission Range 700 m (Typical) (For Russia limitation less 400 meters)
    Hardware COM0
    COM 0 RS-232 TxD, RxD and GND
    RS-485 DATA+, DATA-; Internal ASIC Self-tuner; Non-isolated
    Baud Rate Full-duplex 2400 to 57600 bps
    Half-duplex 2400 to 115200 bps
    Data Format N81, O81, E81, N82
    Buffer 2560 Bytes
    LED Indicators
    Green RF TxD Status
    Yellow RF RxD Status
    Red Power Status
    EMS Protection ESD, Surge, EFT and Hi-Pot
    Required Supply Voltage +10 VDC ~ +30 VDC
    Power Consumption 1 W (Max.)
    Connection 8-pin 5.08 mm Removable Terminal Block
    Casing Plastic
    Flammability UL 94V-0 materials
    Dimensions (L x W x H) 108 mm x 84 mm x 33 mm
    Installation DIN-Rail
    Operating Temperature -25 ~ +75°C
    Storage Temperature -40 ~ +80°C
    Relative Humidity 0 ~ 90% RH, Non-condensing

    Ordering Informations

    RFU-2400 CR 2.4 GHz RS-232/RS-485 Wireless Modem (RoHS)