* New Mailing Address *
671 E. Brokaw Road
San Jose CA 95112
(After August 23rd 2018)



New Product

*NEW* TinyLAN Serial/USB to Ethernet module

*NEW* Wi-Fi/Ethernet to 8 port Modem Server

*NEW* Wireless AI camera Sensor EVK

*NEW* AI MIPI Camera Module

*NEW* Wi-Fi Wireless Cables

*NEW* Wi-Fi Universal AP Modules

*NEW* Wi-Fi/Ethernet/BLE Gateway

*NEW* BLE Sensor Gateway

*NEW* Ethernet/Wi-Fi/BLE to Modem Adapter

Embedded Wi-Fi to Serial module
    temperature range -40 to +105°C

Embedded Wi-Fi AP/router adapter


Ethernet Products

All in One Wi-Fi/Ethernet Station

Medical MOPP Ethernet Switch

Serial to Ethernet Module

USB to Ethernet Adapters -

- IEC 60601-1 Certified MOOP/MOPP

- 3.0 to 2.5G bps

- 3.0 to Gigabit Ethernet

- 2.0 to 100M bps

Ethernet/Wi-Fi/USB/Serial Converter

Ethernet to Serial / Modem Adapter

Ethernet to Analog Modem Adapter


Wireless Modems

Wi-Fi Cables -

- RJ-45/DB9

Wi-Fi Modems -




- PCIe Wi-Fi

- PCIe (M2) Wi-Fi

Bluetooth Modems -

- BT4.2

- BT5.1 *NEW*

- BT5.3 *NEW*

3G Cellular Modems

2.4GHz Transceiver

GPS Module


PSTN, Dial-Up Modems

By Interfaces -

- Serial TTL, Internal

- RS232, Internal, 12/24/48V

- RS232, Standalone

- USB, Internal

- USB, Standalone

- PC/104

- ISA Bus


By Applications -

- Medical Modems

- Smart Phone FAX Modem

- Contact ID Modems

- Leased-Line Modems

- Bell 202 Compatible

- Speakerphone Modems


PC/104 Products

PC/104 Modem

PC/104 3G Cellular

PC/104 Wi-Fi

PC/104 Ethernet


Custom Specifications

Build-to-Suit, Wired or Wireless




-40°C to +85°C Operating Temperature

RoHS Compliance on Select Models

Multiple Country Telecom, EMC, EMI and Safety Compliance

FCC68, CS-03, and CE certified

IEC60950-1, c/UL 60950, EN60950-1, EN60601-1 (Medical) Approved


The Half-InchModem™ measures only 1.0” x 1.0” x 0.3”.  This feature-rich modem module family is fully self-contained including built-in data pump, modem controller and on-board International DAA.  This complete solution provides system engineers the flexibility to include modem functionality in system products with minimal engineering resources.

Standard features of the modem include data rates from 300 up to 56 kbps, 14.4 kbps fax rate, voice playback and recording.  The modem also provides enhanced features such as Caller ID, Extension Pick-up detect, Remote Hang-up, Quick Connect (V.92 models) and DLG (Digital Line Guard) protection.


  • -40°C to +85°C operating temperature

  • RoHS compliance on select models

  • Single 3.3V supply

  • Serial TTL Interface

  • Enhanced AT Command Set

  • 300 bps up to 56 kbps data speeds downstream

  • Upstream data rate up to 48 kbps (V.92 models) 

  • Online / voice playback and recording

  • 14.4K bps Fax - Class 1

  • Generates / Detects DTMF tones in online voice mode

  • V.44 data compression (V.92 models)

  • V.42bis and MNP 5 data compression

  • V.42 LAPM and MNP 2-4 error correction

  • Automatic format and speed sensing

  • Low power consumption and sleep mode support

  • Line-in use, Remote Hang-up, Extension Pick-up detection

  • Caller ID type I and II for select countries

  • Call waiting detection

  • Digital Line Guard (DLG) protection

  • Agency approvals:

    • Transferable FCC68, CS03 and CTR21 certifications

    • EN55022B, EN55024 compliance

    • c/UL 60950-1 Recognized Component

    • IEC60950-1, EN60950-1, EN60601-1 (Medical Electronics) compliant

    • CE Marking

Default Countries Supported: (Country Code)

Australia (09), Austria (0A), Belgium (0F), Brazil (16), China (26), Denmark (31), Finland (3C), France (3D), Germany (42), Hong Kong (50), India (53), Ireland (57), Italy (59), Japan (00), Korea (61), Malaysia (6C), Mexico (73), Netherlands (B5), Norway (82), Poland (8A), Portugal (8B), Singapore (9C), South Africa (9F), Spain (A0), Sweden (A5), Switzerland (A6), UK (B4), USA (B5), TBR21 (FD), Taiwan (FE).

Ordering Information

Model No.




RoHS Compliance


2400 bps





33.6k bps





56k bps





Please click here to view and print 240HM-RC data sheet

Ratings @ 25o C






Tip / Ring Current Continuous 10   120 mA
Dielectric Withstanding Voltage     1500 VRMS
Operating Temperature -40   +85 °C
Relative Humidity (non-condensing) 10   95 %
Voltage Requirement 3.00 3.30  3.60 VDC
Power Consumption   195   mW
Sleep Mode Power Consumption
  60   mW
Current Consumption
  59   mA
Sleep Mode Current Consumption   18   mA
Transmit & Receive Level -10.5 + 1.5(Tx)   -43 + 2(Rx) dBm

Mechanical Diagram & Pin Assignments - 240/336/V92HM Family



  1. Pin spacing is 0.100" from center to center.

  2. Dimension of the modem without enclosure - 1.00" x 1.00" x 0.30"

  3. Pin 8 and pin 14 are not provided

  4. Square pins - 0.025" x 0.025"

  5. *DSR - Tied to GND through a 30-ohm resistor.  Use to terminate DSR signal if necessary

  6. Suggested mating female connectors:

    Through Hole:

    a. Samtec P/N. #SSW-108-21-G-S (RoHS)

    b. Molex P/N. #90147-1208 (non-RoHS)


    a. Samtec P/N. #SSW-108-22-G-S-VS (RoHS)


Information furnished by Radicom Research is believed to be accurate and reliable.  However Radicom Research assumes no responsibility for its use, or any infringement of patents or other rights of third parties which may result from its use.  Radicom Research reserves the right to change circuitry at any time without notice.  This document is subject to change without notice.

The information contained herein is subject to change without notice. Logos, trademarks and copyrights are property of their respective owners.

^Back to top



Home  •  Products  •  Warranty  •  Patents  •  Career  •  About Us  •  Contact Us  •  How to Buy•  RoHS Statement

©2007 Radicom Research, Inc.