Dahua ARB1606 16-Channel Alarm Expansion Box (RS485 Interface)

The ARB1606 Alarm Box is a 16-channel alarm expansion module designed for seamless integration with NVR and XVR systems via RS485 communication. It provides 16 alarm input channels and 6 alarm output channels, allowing advanced alarm linkage and automation within CCTV systems.

Ideal for commercial and large-scale security installations requiring additional alarm integration beyond standard recorder capacity.

Datasheet

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Key Features

• Supports RS485 communication with NVR & XVR

• 16-channel Alarm Input

• 6-channel Alarm Output

• 2-bit DIP switch for device addressing

• Supports up to 4 alarm boxes connected to one back-end storage device

• Universal 12V power supply

• Can be powered via:

  • Separate 12V/1A adapter

  • 1-to-2 power cable using DVR power supply

• Front panel LED indicators:

  • PWR – Power status indicator (steady ON when powered)

  • ACT – Communication indicator (flashes every second when connected)

• Supports linked alarm configuration between recorder and alarm box

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System Integration

Once communication is established between the ARB1606 and NVR/XVR device, linked alarm actions can be configured on both alarm input and output interfaces for automated responses such as:

• Trigger recording

• Activate sirens or strobes

• Send notifications

• Control external devices

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Technical Specifications

Communication

• Interface: 1 × RS485 Port

• DIP Switch: 2-bit addressing

Alarm Interface

• Alarm Input: 16 channels

• Alarm Output: 6 channels

Electrical

• Power Supply: 12V / 1A
  (Supports 1-to-2 power cable using DVR power)

• Power Consumption: 0.2W

Environmental

• Operating Temperature: –10°C to +55°C

• Operating Humidity: 10%–90% RH

Construction

• Dimensions: 97.68 mm × 90.3 mm × 33 mm

• Net Weight: ≤0.2 kg

• Installation Type: Desktop installation