Technology partner: V474 Altronix Corporation
Maximal75 distributes and switches power to access control systems and accessories. It converts a 115VAC 60Hz input into sixteen (16) independently controlled 12VDC and 24VDC fuse protected outputs. These Fail-Safe/Fail-Secure power outputs may be converted to dry form ''C'' contacts. The outputs are activated by an open collector sink or normally open (NO) dry trigger input from an Access Control System, Keypad, Push Button, REX PIR, etc. Units will route power to a variety of access control hardware devices including: Mag Locks, Electric Strikes, Magnetic Door Holders, etc. The FACP Interface enables Emergency Egress, Alarm Monitoring, or may be used to trigger other auxiliary devices. The fire alarm disconnect feature is individually selectable for any or all of the sixteen (16) outputs.
Suggested Replacement for MAXIMAL75F


  • 115VAC 60Hz, 7.0A input.
  • a) Two (2) common power input for either ACM8 and lock power (factory installed).
  • b) Two (2) isolated power inputs (external power supply is required), (current is determined by the power supply connected, not to exceed a maximum of 10A total).
  • Sixteen (16) Access Control System trigger inputs.
  • a) Sixteen (16) normally open (NO) inputs.
  • b) Sixteen (16) open collector inputs.
  • c) Any combination of the above.
  • 12VDC and 24VDC outputs.
  • A) 24VDC @ 9.7A plus 12VDC @ 9.5A.
  • Sixteen (16) independently controlled outputs.
  • a) Sixteen (16) Fail-Safe and/or Fail-Secure power outputs.
  • b) Sixteen (16) form ''C'' 5A rated relay outputs.
  • Sixteen (16) auxiliary power outputs (unswitched) (outputs are rated 2.5A).
  • Filtered and electronically regulated outputs (built-in power supply).
  • Thermal and short circuit protection with auto reset.
  • Power Supply input fuse ratings:
  • AL1024ULXB - 10A/250V.
  • AL1012ULXB - 3.5A/250V.
  • ACM8 boards main fuse is rated at 10A Output fuses are rated @ 3.5A.
  • Fire Alarm disconnect (latching or non-latching) is individually selectable for any or all of the sixteen (16) outputs.
  • a) Normally open (NO) or normally closed (NC) dry contact input.
  • b) Polarity reversal input from FACP signaling circuit.
  • Alarm output relay indicates that FACP input is triggered (form ''C'' contact rated @ 1A 28VDC).
  • AC fail supervision (form ''C'' contacts).
  • Notification trigger is selectable for 30 seconds (factory set) or 6 hours.
  • Low battery and battery presence supervision (form ''C'' contact).
  • Built-in charger for sealed lead acid or gel type batteries.
  • Automatic switch over to stand-by battery when AC fails.
  • Zero voltage drop when unit switches over to battery backup (AC failure condition).
  • Red LEDs indicate outputs are triggered (relays energized).
  • Green LED indicates FACP disconnect is triggered.
  • AC input and DC output LED indicators.
  • Relative Humidity 85% +/- 5%.
  • BTU/Hr (approx.): 177 BTU/Hr.
  • System AC input VA requirement: 805VA.