Technical Specifications
AC-425 Hardware Installation and User Manual 11
2. Technical Specifications
Parameter Description/Value
Electrical Characteristics
Operating Voltage
13.8 VDC 1.5 A from PS-33
Maximum Input Current
Standby: 80 mA
Maximum: 325 mA
General Inputs
4 supervised high impedance inputs.
8 or 12 supervised inputs when using MD-D04 or
MD-IO84 expansion boards
Maximum voltage: 5 VDC
Relay Outputs
4 relay outputs
8 supervised outputs when using MD-D04 or MD-
IO84 expansion boards
5A relay N.O. and N.C. options
Reader Ports
Standard = 4 reader ports
With MD-D04 = 8 reader ports
Output voltage: 12 VDC
Max. current: 245 mA
LED control output D0/D1, tamper input
Visual Indicators
9 LEDs (14 LEDs with MDD04)
Audio
Built-in sounder (bell, chime, and siren)
Battery Standby Time
3 hours (with 12 V battery
Communication Characteristics
RS-232
Terminal Block
RS-485
Molex and Terminal Block
TCP/IP (AC-425IP model only)
Onboard RJ-45 connector
Internal IP module
Speed Options
9600, 19200, 57600, 115200 bps
Environmental Characteristics
Operating Temperature Range
0°C to 49°C (32°F to 120°F)
Operating Humidity Range
0 to 85% (non-condensing)
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