APC SmartSlot Series - Manual (Page 8)

4. Sensor Zone Connections
Connection Information
Measure-UPS II supports normally open and normally closed loop
systems, and allows mixing of normally open and normally closed
sensors on any zone. See the figures below for more information on
using multiple sensors in one zone and for system hookup.
Note: Do not cross connect sensors used with Measure-UPS II with
those of any other system.
Sensor Zones Connector Pinout
Pin Function
1 power supply, +12 Vdc nominal, 60 mA max.
2 power supply ground
and normally open connection for all zones
3 zone 1 common
4 zone 1 normally closed
5 zone 2 common
6 zone 2 normally closed
7 zone 3 common
8 zone 3 normally closed
9 zone 4 common
10 zone 4 normally closed