Dahua Wireless Multi IO Transmitter – ARM9A4-P-W2

Expand Your Security System with Powerful IO Integration

The Dahua ARM9A4-P-W2 Wireless Multi IO Transmitter is an advanced interface module designed to connect multiple wired devices to your wireless alarm system. With 16 alarm inputs, 4 relay outputs, and dual auxiliary power outputs, this versatile unit is ideal for large-scale residential, commercial, or industrial security applications.

Offering flexible communication, intelligent power management, and multiple power supply options, the ARM9A4-P-W2 enables seamless integration of wired components into your Dahua wireless ecosystem.

Key Features

• 16 Alarm Inputs & 4 Relay Outputs
  Easily connect a range of sensors, detectors, or control devices to your system, expanding its reach and capabilities.

• 2 Auxiliary Power Outputs (24W Total)
  Power external wired detectors or sirens directly from the transmitter. Includes overload and short-circuit protection for enhanced safety.

• Flexible Power Supply Options
  Choose from PoE, AC power, or an optional rechargeable battery to suit your installation environment.

• Stable RF or Network Communication
  Supports wireless RF or wired network connection to the Dahua alarm hub, providing installation flexibility and system stability.

Ideal For:

• Integrating wired security zones into wireless setups

• Powering wired peripherals like detectors and sirens

• Large-scale or mixed wired/wireless installations

Compatible With:

• Dahua Wireless Alarm Systems

• Ideal for use with models such as the and other W2 series peripherals.

Professional Installation Available

Need help installing your Wireless Alarm System?

• Fixed-price by licensed security technicians

• Available across Sydney Metropolitan Areas

• Discounted rates for Seven Hills Area

• Send us your house plans for tailored coverage advice

Why Choose CTC Security?

• Certified Dahua Reseller

• Trusted Industry Experts for Over 30 Years

• Fast Shipping Australia-Wide

• Licensed Sydney-Based Technicians Available

Upgrade your security system with the power and flexibility of the Dahua ARM9A4-P-W2—available now at

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