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9 pin D-SUB male connector layout
9 pin D-SUB male connector
Cable Part M2502


Device 1
Pin Number
Device 1
Pin Name
Direction Device 2
Pin Number
Device 2
Pin Name
Description (may be empty)
6 Rx   3 TxD  Rx (RS232) and Turn Off UPS (Contact Closure)
7 Common   5 GND  Common
9 Tx   2 RxD  Tx (RS232)

    7,6,1 RTS,DSR,DCD  connect

    8,4 CTS,DTR  connect


         AC Failure (Contact Closure)
 Battery Low (Contact Closure)


9 pin D-SUB female connector layout
9 pin D-SUB female connector
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UPS Neuhaus SmartLine-420, SmartLine-750 visual pinout:click to enlarge
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