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.
| 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) |
| Input | |
| Switched VDC Input |
Inactive state: 0 to 2 VDC / Active state: 8 to 30 VDC |
| Mechanical | |
| 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 |
