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MultiAmp Door Holder Supply

MultiAmp-DH Flush Mount

The MultiAmp-DH Door Holder Supply (DHS) provides up to 250mA of current at 24 VDC to operate door holders. The unit can operate as an “Automatic Door Release System” (ADRS) or respond to a secondary control.

When configured as an ADRS, conventional detectors are installed and connected directly to the DHS. The detection circuit is monitored for alarm, open, or short circuit conditions. The presence of any one of these conditions will deactivate supply to the door holders and cause doors to be released.

Alternatively, doors may be released by a switched VDC input to the DHS, derived normally from a Fire Alarm Control Panel (FACP) or security system. The switched VDC input must be between 8 to 30VDC to release the doors.

  • Mains Powered.
  • 250mA Door Holder Current.
  • Onboard Conventional Detection Zone.
  • Release / Reset Switch on Front Panel.

    Power Supply
    Mains Supply Voltage 230 VAC +/- 10% @ 47-63Hz
    Door Holder Output Voltage 24 VDC @ 250mA
    Operating Temperature -5° to +45° C
    Relative Humidity 25% to 95%
    Zone Detection Circuit
    No of Zones 1 (one), 2-wire system
    Zone Monitoring Open and short-circuit
    Zone Current Load 4.8mA max
    EOL Value 3k3 ohm
    No of detectors/circuit  40 (Max)
    Switched VDC Input

    Inactive state: 0 to 2 VDC / Active state: 8 to 30 VDC

    Material High Impact ABS
    Finish White
    Dimension - Recessed 91mm H X 149mm W x 40mm D
    Dimension - Surface 91mm H X 149mm W x 53mm D
    Weight 400 grams packed
    4510-1100 MultiAmp-DH Flush Mount
    4510-1101 MultiAmp-DH Surface Mount