IML Security Supply
Welcome to IML Welcome to IML
Welcome to IML Welcome to IML
Welcome to IML Welcome to IML
Welcome to IML Welcome to IML
Power Supply Controller 12/24VDC Field Selectable, 4 Amp Class 2 UL 294, Fire Alarm Interface, Alarm Relay Outputs, Built-in Automatic Battery Charging, Enclosure 15-1/2in x 4-1/2in

Part#: DRT4204NX
Hot#: 182040

Available: 2 ( 2 KAN )

  • Series Overview
  • Specifications
Notice: The info below is not item specific.

Dortronics Systems, Inc.

The 4204NX Power Supply provides a field selectable 12 or 24 volt DC output. The required output voltage is accurately regulated, even when operating under maximum and varying load conditions.


  • Dual DC Powered Outputs: One Auxiliary class 2 Power limited output supplies continuous 1 Amp DC power while a second output provides switched DC power through the built-in fire alarm relay.
  • Built-In Battery Back-Up Charger: The battery terminals provide a constant trickle charge to maintain backup battery life. Switchover to battery power is instantaneous in the event of a loss or interruption of the line current.
  • Quick Easy Installation : Installation is fast, from mounting the enclosure to the connection of wiring. No need to add additional relays for alarm monitoring or the fire alarm interface.
  • Visual Indication & Relay Outputs: There are LED status indicators onboard for AC power input and DC power output. Relay outputs are provided for low battery and low power shutdown to prevent deep battery discharge. AC loss relay output triggers upon AC power loss.


  • Electrical: 4 Amp Class 2 UL 294 supply AC Input - Fused 120 VAC DC Output - 4 amp @ 12/24 VDC selectable via slide switch
  • Circuit Board: 4204NXB - 7-1/2”W x 4-5/8”H
  • Enclosure: 12.25”W x 15.5”L x 4.5” Deep NEMA 1 enclosure gray with keyed cam lock
  • Alarm Relay Outputs: AC power loss & Battery Power loss Two form “C” relay outputs contacts rated 1A @ 30VDC

Specifications for Dortronics Systems, Inc. DRT4204NX

Other Specs
Alternate Codes4204NX
CategoryAccess Control, Alarm Power Supplies, Alarms & Intercom, Burglar Alarms, CCTV Products, Power Supplies, Transformers, Wire & Power Supplies