Dahua DHI-ARA43-W2 Wireless Alarm Repeater
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Dahua

Dahua DHI-ARA43-W2 Wireless Alarm Repeater

SKU: DHI-ARA43-W2
Description

The Dahua DHI-ARA43-W2 is a wireless alarm repeater for the Dahua AirShield system. It sits between the hub and your detectors and sirens, forwarding their signals to extend wireless coverage and remove blind spots in larger or awkward buildings. It supports up to 128 peripherals at up to 1,600 m in open space, switches automatically between dual antennas for a reliable link, and has a built-in battery that keeps it working for over 35 hours through a power cut. An AirShield hub is required and sold separately.

Key points
- Extends the hub-to-peripheral range up to 1,600 m in open space
- Provides a second path for up to 128 wireless peripherals
- Automatic dual-antenna switching to reduce signal blind spots
- 868 MHz two-way radio with AES128 encryption and frequency hopping
- Built-in lithium battery, over 35 hours of backup in a power cut
- Tamper alarm and external-power loss detection; needs an AirShield hub
$117.00 AUD $117.00 AUD
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inc GST + 3 Year Warranty & Support
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In stock
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Bundle total: $117.00

§ 01Overview

What the DHI-ARA43-W2 is

The Dahua DHI-ARA43-W2 is a repeater that extends the reach and reliability of a Dahua AirShield wireless alarm. It forwards the signals between the hub and accessories, giving each device a second communication path, so detectors and sirens at the far end of a large house, across a yard or behind partition walls stay solidly connected. You can let the system choose the best path automatically or set it by hand in the DMSS app.

It is built to push coverage out. It carries signals up to 1,600 m in open space, supports up to 128 wireless peripherals, and switches automatically between its dual antennas to cut blind spots. The link uses 868 MHz two-way radio with AES128 encryption and frequency hopping, so the extra hop does not weaken security. A built-in lithium battery keeps it running for over 35 hours if mains power fails, and it reports tamper, low battery and loss of external power.

Please note the corrected figures: this 868 MHz Australian model supports up to 128 peripherals at up to 1,600 m — some listings still quote the older 32-device / 1,000 m numbers, but the current Dahua datasheet specifies 128 and 1,600 m. It is an accessory that needs an AirShield hub to work, and it is added when a system is large or spread out rather than on every install. It runs from a 12 V DC supply, mounts on a wall or sits on a desk, and is genuine Australian Dahua stock with local 3-year warranty and support.

§ 02Engineering

DHI-ARA43-W2 specifications

- Wireless alarm repeater for the Dahua AirShield system
- Extends the hub-to-peripheral range up to 1,600 m in open space
- Forwards signals for up to 128 wireless peripherals; auto or manual path selection
- Automatic dual-antenna switching to reduce blind spots
- 868 MHz two-way communication with AES128 encryption and frequency hopping
- Built-in lithium battery, over 35 hours of backup if mains power fails
- Tamper alarm, low-battery alarm and external-power disconnection detection; cloud update
- 12 V DC powered; wall or desktop mount; EN 50131 Security Grade 2; requires an AirShield hub

§ 04Why choose this

Built for the way you actually use the DHI-ARA43-W2

Reaches the far corners

Extends the hub's range to up to 1,600 m so detectors and sirens at the edge of a property stay connected.

Removes blind spots

Automatic dual-antenna switching works around walls and dead spots that a single antenna would miss.

Keeps going in a blackout

A built-in battery holds coverage for over 35 hours if mains power fails.

Secure by the same standard

868 MHz two-way radio with AES128 and frequency hopping means the extra hop does not weaken the link.

§ 05Where it fits

Right at home in these scenarios

Large or multi-storey homes

Carry the signal to detectors and sirens on a far floor or wing that drop out from the hub alone.

Sheds, garages and outbuildings

Reach devices across a yard or in a separate building well away from the main hub.

Buildings with thick walls

Get around brick, concrete or partitions that block a direct wireless path.

Growing systems

Add it when expanding an AirShield system beyond the comfortable range of the hub.

§ 06Setup

Installation & setup

01

What's in the box

One DHI-ARA43-W2 repeater with built-in battery and mounting hardware. A Dahua AirShield hub and the 12 V DC supply are required and not included.

02

Installation requirements

Place it roughly midway between the hub and the devices that are dropping out, power it from a 12 V DC supply, and enrol it to the hub in the DMSS app. Assign the weak peripherals to route through it, then check their signal strength to confirm the link has improved before relying on it.

§ 07Questions

Frequently asked about the DHI-ARA43-W2

Q.01

What does the ARA43-W2 repeater do?
It relays the wireless signals between your AirShield hub and its detectors, sirens and keypads, giving each device a second path to the hub. That extends coverage and removes blind spots so devices at the edge of range stay reliably connected.
Q.02

How many peripherals and what range does it support?
The current 868 MHz datasheet specifies up to 128 wireless peripherals at up to 1,600 metres in open space. Some older listings still quote 32 devices and 1,000 metres; the figures here follow the latest official Dahua datasheet.
Q.03

When do I actually need a repeater?
Add one when a device is dropping out at the edge of the hub's range or behind walls — for example a siren on a far shed, detectors in a separate wing, or a device across a large yard. On a compact home where everything reports well, you usually do not need it.
Q.04

Does it work on its own?
No. It is part of the Dahua AirShield system and needs an AirShield hub. It extends the hub's reach; without a hub there is nothing for it to relay.
Q.05

How does it reduce blind spots?
It has two antennas and switches between them automatically to pick the stronger path, which helps it get around obstructions and dead spots that a single fixed antenna would struggle with.
Q.06

What happens in a power cut?
A built-in lithium battery keeps the repeater working for over 35 hours if its mains supply fails, so coverage is maintained through a typical outage, and it reports the loss of external power to the system.
Q.07

Is the relayed signal still secure?
Yes. It uses the same 868 MHz two-way radio with AES128 encryption and frequency hopping as the rest of the system, so passing through the repeater does not reduce security.
Q.08

Is this genuine Australian Dahua stock?
Yes. It is the 868 MHz AirShield repeater supplied as genuine Australian Dahua stock with local 3-year warranty and support, matching the AirShield hubs and peripherals sold here.

§ 09Bundles

Recommended packages

04

Want a ready-made system?

Start from a bundled AirShield starter kit and add this repeater on larger sites.