The Data Connect MIU14.4 


To service the growing need for efficient, reliable data communication in harsh environments of utility substations and industrial facilities, has developed a 14400bps modem that can operate from various AC/DC power supplies and survive high surge levels and extreme heat and cold. All this without compromising the performance expected from state-of-the-art communication devices.

With the rapid move toward “intelligent” substations, where meters, relay, RTUs, SCADA systems, etc. are able to “talk” to a remote operator, communication devices such as modems are moving off the desktop and into the field, where the conveniences of 115VAC power outlets and climate control are usually hard to find.

Data Connect Enterprise has addressed this problem by developing the MIU14.4 modem designed specifically for harsh environments

The MIU14.4  modem is a highly sophisticated full duplex, V.32bis data modem that is designed to interface with RS232, RS485 (external device), 5V logic (TTL) or simple send and receive signals. The MIU14.4 series modem operates at full or half duplex on dial-up or 2-wire and 4-wire leased line systems.

The MIU14.4  modem is powered from a unique power supply that enables it to operate on any AC or DC voltage ranging from 48V to 240V. A low voltage version (9-36VDC) is also available. The MIU14.4 modem is designed to work in temperatures from 40°C to +85°C, and is surge protected on both the power and analog lines.

The MIU14.4  modem is bundled in a 5-3/8” x 1-3/8” non metallic enclosure, suitable for desktop or wall mounting.


  • Modem Interface Units AC/DC Powered
  • Substation Hardened Communication Interface Units
  • 14.4kbps 2 & 4 Wire Leased Line Modem
  • 48 to 220 AC/DC Power Supply
  • IEC801-4 Surge Protection
  • -40°C to +85°C Operating Temperature
  • For Meters, Relays, SCADA etc.


Modem Line Speeds: 
Asynchronous 1400, 9600, 4800, 1200, 300bps

DTE Rates:
Above modem line speed (IE; with data compression) 57.6, 38.4, 19.2

V.32bis, V.32, V.22bis, V.22, Bell 212A, Bell 103

Transmission Line:
Dial or 2 & 4 Wire Leased Line

Hayes Extended AT Command Set

Power Supply 48VAC/DC to 220VAC/DC (Optional 9-36VDC)

Power Connector: 
4-ft AC Cord with 3-PIN Screw Terminal connector included

 Case Size:
5-3/8” x 4” x 1-3/8”

Digital Port:
RS232 with DB9 Connector

Analog Port:
RJ11 Modular Jack

Surge Protection:
(Power Line) 8kV [Exceeds IEC801-4] (20kV {IE801-5} Available if required)

Surge Protection:

-40° to +85°C, 0 to 95% humidity (non-condensing)

FCC Part 68, Industry Canada

MIU14.42 (1)

Ordering Information

DCE/MIU14.4                            V.32bis 14.4Kbps Standalone Dial 48-220VAC
DCE/MIU14.4-LV                       V.32 14.4Kbps Standalone Dial 9-36VDC