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6.3 Recycling Used Batteries
Contact your local recycling or hazardous waste center for information on the
proper disposal of used batteries.
7. Communication
7.1 DB-9 Connector
The UPS has a DB-9 (9 pin female) connector on the rear panel that allows the UPS to communicate with a
computer with UPS software. The connection provides serial communications for utility and battery signals.
Table G — DB-9 pin assignment
DB-9 Pin
Assignment Description
1
Low battery (open collector)
2
UPS TxD
3
UPS RxD
4
N.C.
5
Common
6
N.C.
7
Low battery (open emitter)
8
Utility fail (open emitter)
9
Utility fail (open collector)
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