Product information


WiMOD Wireless Module for different ISM Bands

The iM240B is a compact wireless module for the globally available 2.4 GHz frequency band.

The module has superb HF performance, resulting in a link budget of approx. 104 dB. Accordingly, high ranges (> 500m) can be achieved at a data rate of 250 kbps. The quality of the radio link can be evaluated using field strength measurement (RSSI1). In addition to an IEEE 802.15.4 transceiver and a microcontroller, it features an integrated PCB antenna. Of course you can get the module with a 50Ω port for connecting an external antenna. The iM240B can be soldered directly on the target hardware just as usual SMD components.

The integration of an RF system in a new or existing product is therefore significant simplified, which reduces development time, risk and costs.

Key Features

  • Compact radio module for 2.4 GHz
  • Huge link budget (104 dB) @ 250 kbps
  • RF datarate up to 250 kbps
  • Compliant to IEEE 802.12.4
  • Received signal strength indicator (RSSI)
  • Sample applications available
  • Bootloader functionallity included
  • 2-wire interface (TWI2)*, compatible t
  • Solderable like a SMD component
  • o Philips l²C protocol
  • Integrated PCB antenna or 50Ω pad
  • RoHS conform

Application Areas

  • Building automation
  • Metering
  • Remote control
  • Telemetrie
  • ...

Technical Data

  1. Frequency range:2405 MHz to 2480MHz
  2. Operating channels:16
  3. Modulation:DSSS with O-QPSK
  4. RF output power:typ. 3 dBm (50Ω Pad)
  5. Receiver sensitivity:typ. -101 dBm @ PER3
  6. RF datarate:250 kbps
  7. RF range:up to 700 m line of sight
  8. Operating voltage:2 V to 3.6 V (typ. 3.0 V)
  9. Current consumption:typ. 20 mA (receive)typ. 22 mA (transmit @ 0 dBm)typ. 4 mA (µC active, transceiver off)typ. 1 µA (power down)
  10. Interfaces:6 general purpose IOs (analog/digital/l²C)3 digital IOs2 analog input, 1 analog referenceUART, typ. 38.4 kBaud (further on demand)2-wire Serial Interface (Philips l²C compatible)*
  11. Dimension (LxWxH):20 x 32.5 x 5 mm
  12. Operating temperature:-20°C to +70°C

Adobe Reader 9 or newer version is required to view following below PDF files. This is a free program available from the Adobe web site. Follow the download directions on the Adobe web site to get your copy of Adobe Reader.

iM240B Datasheet V1.0 (570.3 KB)
WiMODDLL Spec V1.3 (167.9 KB)
WiMODHCI Spec V0.9 (356.5 KB)

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