The GMM30-MMMMTTTTSZ9HHS9 module is a media module from the Greyhound series of rack mount switches made by Hirschmann. The unit draws its power from the rack mount switch and it consumes 6.5 Watts of power. The module has 4 ports for Fast Ethernet communication and 4 ports for FE/GE communication. The weight of the unit is 550 grams (1.1 pounds) and its operating temperature range is 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit).

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The product code GMM30-MMMMTTTTSZ9HHS9 is the product code for a Fast Ethernet and Gigabit Ethernet media module that has been designed and manufactured by Hirschmann. The unit has a twisted pair cable length of 0 to 100 meters and it also supports the usage of multi-mode fiber cables in lengths up to 5000 meters. This particular media module is interchangeable and it can be used for making changes on the live network. Additionally, the changes on the live network will not interfere with the communications. The GMM30-MMMMTTTTSZ9HHS9 media module is part of the Hirschmann Greyhound rack mount switches series and it is used for both Fast and Gigabit Ethernet communication. The GMM30-MMMMTTTTSZ9HHS9 nedia module consumes 6.5 Watts of power during operation and it has the same operating voltage as the compatible switch and it uses the switch’s power source. The media module has an power output rating of 22 BTU per hour as heat. 


The approximate weight of the small but rugged GMM30-MMMMTTTTSZ9HHS9 media module is 550 grams (1.1 pounds). The operating temperature ranges from 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit) and the storage temperature is -40 to 70 degrees Celsius (-40 to 158 degrees Fahrenheit). The unit has a MTBF rating of 1,900,610 hours at 25 degrees Celsius and it can tolerate 5 to 95% (non-condensing) relative humidity. The GMM30-MMMMTTTTSZ9HHS9 media module complies with the EN 61000-4-2 electrostatic discharge (ESD) immunity standards with 8 kilovolts of contact discharge immunity and 15 kilovolts of air discharge immunity. Additionally, the unit complies with several standards for electromagnetic field, fast transients, surge voltage, conducted immunity and mains frequency voltage safety. Additionally, the GMM30-MMMMTTTTSZ9HHS9 media module is approved for the safety of industrial control equipment according to the EN61131 and EN60950 standards.


Technical specifications


Rack Mount Switches


4 Ports for Fast Ethernet and 4 Ports for Gigabit Ethernet

0 to 100 meters

0 to 5000 meters and 0 to 4000 meters

Switch Backplane

6.5 Watts

22 BTU per Hour

550 grams (1.1 pounds)

0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit)

-40 to 70 degrees Celsius (-40 to 158 degrees Fahrenheit)

5 to 95% (Non-Condensing)

Media Module, General Safety Instructions


Common misspellings:

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