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AM-FM Transmitters and Bugs
PowerCom King UPS cable
pinout
9 pin D-SUB male connector to the UPS
UPS
Signal Name
DB-9 Male
(UPS end)
DB-9 Female
(PC end)
PC
Signal Name
RxD
1
2
AC Fail
2
9
Contact closure
n/a
3
1
not used
GND
4
5
Common ground
Bat Low
5
6
Contact closure
TxD
6
3
GND
7
8
RTS
8
7
DTR
9
4
AC Fail and Bat Low - normally open (shorted to GND when active).
9 pin D-SUB female connector to the computer
Source:
www.pinouts.ru
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