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Intelligent Remote Maintenance Device Server with Voice Streaming and Pair Connection.  Has one RS-232/RS-485 and one RS-485 port.


Intelligent Remote Maintenance Device Server with Voice Streaming and Pair Connection. Has one RS-232/RS-485 and one RS-485 port.

  Price:  $729.00  

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We ship via UPS and fastest delivery is with Next Day Air. UPS Next Day Air Early typically gets their product to them as early as 8am, Next Day Air gets their product typically there by 10:30am and Next Day Air Saver typically by 3pm. We ship same day for in stock items and the lead time is up to one week for out of stock items. Delivery is dependent on UPS and your shipping method.


The M2M-720-A module is specially designed for the remote maintenance solution with voice streaming. This module provides 2 major technologies on networking: Voice streaming and Pair connection. The Pair connection means that the user can operate remote COM port device via Ethernet TCP/IP protocol just like a local COM port and the Voice streaming means the user can talk to remote operator while operate remote COM-linked devices. Refer to the following graph. Furthermore, M2M-720-A integrates the Virtual com technology. That can resolve the insufficiency of real com port in PC. By applying this technology, the maintenance man can take the remote maintenance or monitor whatever time or place.

Remote Maintenance: Build the remote maintenance system all over the world


Broadcasting system: Build the broadcasting system through internet or intranet

application 2

Serial application revolution: Upgrade the original serial application to network application

application 3


  • Support voice streaming on network
  • Provide pair connection (RS-232, RS-485) on network
  • Support server and client function
  • Server mode can manage max 64 clients (Clients can be M-4132, M2M-720-A, M2M-710D …)
  • Support voice broadcast function in server mode
  • Support Virtual COM technology
  • Web-based administration
  • Linux 2.6 platform
  • Provide Static IP/DHCP/PPPoE
  • Provide dynamic DNS function to resolve the problem without the fixed real IP
  • Provide event record and e-mail function
  • Built-in web server, FTP server
  • Built-in RTC
  • Built-in self-tuner ASIC chip for RS-485 port
  • Provide LED indicators
  • Robust, fan less design
  • CE/FCC, EMI, RoHS compliance

Web-based administration

The M2M-720-A module built-in web server, the user can operate and set the module easily by web browser.

web based


CPU xScale PXA-255, 400 MHz processor
Flash 32 MB
Ethernet Ethernet Speed: 10/100M
Ethernet interface: RJ-45 connector
Internet connection type: DHCP, Static IP, PPPoE
Ethernet protocol & services: TCP/IP, Web server, FTP server, Telnet & SSH
Audio Provide microphone input and stereo speaker output
Microphone and speaker interface: 3.5mm 3-pin phone jack
Volume and tone quality adjustable
COM port Serial port - RS-232/RS-485
COM1: RS-232 interface -- 3-pin screw terminal block
RS-232: TX, RX, GND
COM2: RS-485 interface -- 2-pin screw terminal block
RS-485: D+, D-, self-tuner ASIC inside
Baud Rate : 1200/2400/4800/9600/19200/38400/57600/115200 bps
Data Format: 5/6/7/8 data bits, None/Odd/Even parity bit, 1/2 stop bit
Power Requirement Unregulated +10V ~ +30 VDC
Power Consumption 4.6 W
Environmental Operating temperature: -20 ~ 60 ℃
Storage temperature: -25 ~ 85 ℃ 
CE/FCC, EMI, RoHS compliance
Dimensions (W x L x H) 72 x 33 x 110 (mm)

References and Support

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