Power Requirements
4–2 iSTAR Ultra Installation and Configuration Guide
Power Requirements
Power
This section provides the power requirements for the iSTAR Ultra and its components. 
Electrical
Electrical ratings are dependent upon the configuration.
GCM
 Power Input (12 Vdc  ± 20%)
12 Vdc , 1.5 - 5.0A max.
 Power Output 
RS485: 12 Vdc , 1.5A max. each
ACM
 Power Input (12 Vdc  ± 20%)
• Vreader: 12 Vdc , 0.5 - 12.5A max.
• Vlock1: 0 - 30 Vdc , 0 - 12A max.
• Vlock2: 0 - 30 Vdc , 0 - 12A max.
 Power Output 
• RS485/Wiegand/AUX: 12 Vdc , 1.5A max. each
• Primary Wet Relay Out: 0 - 30 Vdc , 0.75A max. each
• Secondary Wet Relay Out: 0 - 30 Vdc , 0.75A max. each
• Secondary Dry Relay Out: 0 - 30 Vdc , 1A max. each
IP-ACM
 Power Input
• 12 or 24 Vdc 32W maximum
• IEEE 802.3af (PoE) and 802at (PoE Plus), 25.5W max. LLDP supported for PoE Plus
  Power Ouput
• RS485/Wiegand: 12 Vdc; The aggregate load of each pair of RS-485 and Wiegand 
connections together must not exceed 750mA. Each set of Rs-485 and Wiegand can 
support 750mA. Maximum combined output limit for readers and locks is 23W.
• Wet Relay: 12 or 24 Vdc  (jumper selectable), 0.5A (per lock)
NOTE
The Wiegand, RS-485, and Aux ports are power limited on the ACM.