Oh. Mine is a SmartUPS. Perhaps that makes it smarter than the average UPS?
Code:
APC      : 001,051,1216
DATE     : Sat Oct 15 14:31:49 BST 2011
HOSTNAME : jalfrezi
RELEASE  : 3.12.3
VERSION  : 3.12.3 (26 April 2006) unknown
UPSNAME  : UPS_IDEN
CABLE    : Custom Cable Smart
MODEL    : Smart-UPS 750
[...]
MAXLINEV : 249.1 Volts
MINLINEV : 247.6 Volts
OUTPUTV  : 247.6 Volts
[...]
FIRMWARE : 651.12.I
APCMODEL : FWI
END APC  : Sat Oct 15 14:32:27 BST 2011

Peter