Dahua DHI-ARA12-W2 Alarm Wireless Indoor Siren
Skip to product information
1
/
of
1
Vendor:
Dahua
Dahua DHI-ARA12-W2 Alarm Wireless Indoor Siren
SKU: DHI-ARA12-W2
Description
The Dahua DHI-ARA12-W2 is a wireless indoor siren for the Dahua AirShield alarm system. When the system is triggered it sounds a loud alarm of up to 84 dB to startle an intruder and alert anyone inside, with three volume levels so you can match it to the room. It links to your AirShield hub over an encrypted 868 MHz two-way connection and runs on batteries, so there is no wiring to run. An AirShield hub is required and sold separately.
Key points
- Loud indoor alarm up to 84 dB at 1 m, with three selectable volume levels
- 868 MHz two-way radio with AES128 encryption and frequency hopping
- Range up to 1,000 m in open space to the hub
- Tamper alarm, test mode and low-battery warning built in
- Runs on 2 x CR123A batteries, around 2.5 years of life
- Bracket-mounted; indoor use; requires a Dahua AirShield hub
Delivery, warranty & returns · 3-year warranty · shipped from Australian stock
- Tracked delivery on every order. The tracking number is emailed as soon as it ships.
- Metro delivery: 2–4 business days. Regional areas may take longer. Free standard shipping over $300, flat $25 under.
- 3-year warranty on cameras and recorders, back-to-base, plus your Australian Consumer Law rights.
- 30-day returns on unopened items. Faulty on arrival? We cover return shipping.
- Genuine Australian stock. Never grey imports. Prices include GST.
In stock
No reviews
Dahua DHI-ARA12-W2 Alarm Wireless Indoor Siren
1
/
of
1
All cameras, NVRs and DVRs come with a 3-year back-to-base manufacturer warranty covering defects in materials and workmanship, in addition to your rights under Australian Consumer Law. Hard drives and accessories are covered as set out in our Warranty Policy.
Standard shipping is free on all orders over $300 AUD, Australia-wide. Orders under $300 ship at a flat rate of $25, calculated at checkout. Tracking is included on every order.
You have 30 days from the day you receive your order to request a change-of-mind return. Items must be unopened, factory-sealed and in resalable condition. A 15% restocking fee applies and return postage is at your cost. Faulty or incorrectly supplied items are different: we cover the return shipping and refund or replace at no charge. Read the full Return & Refund Policy.
Metro delivery usually takes 2–4 business days after dispatch, and regional areas may take longer. You'll receive a tracking number by email as soon as your order leaves the warehouse.
01Overview
What the DHI-ARA12-W2 is
The Dahua DHI-ARA12-W2 is a battery-powered wireless siren that makes a Dahua AirShield alarm impossible to ignore indoors. When the hub triggers an alarm it sounds at up to 84 dB at one metre, loud enough to startle an intruder and wake or alert the household, and three volume levels let you tune it down for a small unit or up for a larger home or office.
Because it is fully wireless it mounts on its bracket wherever you need sound — a hallway, stairwell or central room — with no cabling. It connects to the hub over 868 MHz two-way radio with AES128 encryption and frequency hopping at up to 1,000 m in open space, and a tamper alarm flags any attempt to prise it off the wall. A test mode and signal-strength check help you place it well, and it even monitors temperature.
A couple of honest notes: this is the indoor screamer, designed to be heard inside — for a weatherproof siren and strobe on an outside wall, pair it with the outdoor ARA13-W2. It runs on two CR123A batteries for around 2.5 years with a low-battery warning, and like every AirShield device it needs a hub to work. It is genuine Australian Dahua stock with local warranty and support.
02Engineering
DHI-ARA12-W2 specifications
- Wireless indoor siren for the Dahua AirShield alarm system
- Loud alarm up to 84 dB at 1 m (78 dB medium) with three selectable volume levels
- 868 MHz two-way communication with AES128 encryption and frequency hopping
- Range up to 1,000 m in open space to the AirShield hub
- Tamper alarm, test mode and signal-strength check; low-battery warning
- Built-in temperature monitoring
- Powered by 2 x CR123A batteries, around 2.5 years of life; bracket mount, indoor (-10 to +55 C)
- EN 50131 Security Grade 2; requires a Dahua AirShield hub; genuine Australian stock, 3-year warranty
- Loud alarm up to 84 dB at 1 m (78 dB medium) with three selectable volume levels
- 868 MHz two-way communication with AES128 encryption and frequency hopping
- Range up to 1,000 m in open space to the AirShield hub
- Tamper alarm, test mode and signal-strength check; low-battery warning
- Built-in temperature monitoring
- Powered by 2 x CR123A batteries, around 2.5 years of life; bracket mount, indoor (-10 to +55 C)
- EN 50131 Security Grade 2; requires a Dahua AirShield hub; genuine Australian stock, 3-year warranty
03Full datasheet
Detailed specifications
Audio
| Feature | Detail |
|---|---|
| Volume Adjustment | 3 volumn levels |
| Sound Pressure | Volume high 84 db (A )1 m | Volume medium 78 db (A)1 m |
Network & Storage
| Feature | Detail |
|---|---|
| Carrier Frequency | 868.0 MHz–868.6 MHz |
| Transmitter Power (EIRP) | Limit 25 mW |
| Communication Distance | Up to 1,000 m (3,280.84 ft) in an open space |
| Communication Mechanism | Two-way |
| Frequency Hopping | Yes |
| Encryption Mode | AES128 |
| Remote Upgrade | Cloud update |
Event & Alarm
| Feature | Detail |
|---|---|
| Tamper Alarm | Yes |
| Test Mode | Yes |
| Low Battery Alarm | Yes |
| Search | Signal strength detection |
Interface
| Feature | Detail |
|---|---|
| Indicator Light | 1 × green alarm indicator |
| Button | 1 × power button |
General & Environment
| Feature | Detail |
|---|---|
| Power Supply | 2 × CR123A batteries |
| Power Consumption | Max. 240 mW |
| Operating Temperature | –10 °C to +55 °C (+14 °F to +131 °F) (indoor) |
| Operating Humidity | 10%–90% (RH). |
| Product Dimensions | 81.0 mm × 81.0 mm × 26.0 mm (3.19" × 3.19" × 1.02") (L × W × H) |
| Packaging Dimensions | 135.0 mm × 98.5 mm × 56.8 mm (5.31" × 3.88" × 2.24") (L × W × H) |
| Installation | Bracket mount |
| Net Weight | 105 g (0.23 lb) |
| Gross Weight | 175 g (0.39 lb) |
| Battery Life | 2.5 years in working status (triggered twice every week and alerts 120 s for each triggering) |
| Casing | PC + ABS |
| Temperature Measuring Range | –15 °C to +65 °C (+18.8 °F to +149 °F) (indoor) |
| Temperature Measuring Precision | ± 1 °C (± 33.8 °F) |
| Temperature Resolution | 1 °C (33.8 °F) |
| Certifications | CE | EN 50131-1:2006+A1:2009+A2:2017+A3:2020 | EN 50131-4:2019 | EN 50131-6:2017 | EN 50131-5-3:2017 | Security Grade 2 | Environmental Class II |
| Audio — Volume Adjustment | 3 volumn levels |
|---|---|
| Audio — Sound Pressure | Volume high 84 db (A )1 m | Volume medium 78 db (A)1 m |
| Network & Storage — Carrier Frequency | 868.0 MHz–868.6 MHz |
| Network & Storage — Transmitter Power (EIRP) | Limit 25 mW |
| Network & Storage — Communication Distance | Up to 1,000 m (3,280.84 ft) in an open space |
| Network & Storage — Communication Mechanism | Two-way |
| Network & Storage — Frequency Hopping | Yes |
| Network & Storage — Encryption Mode | AES128 |
| Network & Storage — Remote Upgrade | Cloud update |
| Event & Alarm — Tamper Alarm | Yes |
| Event & Alarm — Test Mode | Yes |
| Event & Alarm — Low Battery Alarm | Yes |
| Event & Alarm — Search | Signal strength detection |
| Interface — Indicator Light | 1 × green alarm indicator |
| Interface — Button | 1 × power button |
| General & Environment — Power Supply | 2 × CR123A batteries |
| General & Environment — Power Consumption | Max. 240 mW |
| General & Environment — Operating Temperature | –10 °C to +55 °C (+14 °F to +131 °F) (indoor) |
| General & Environment — Operating Humidity | 10%–90% (RH). |
| General & Environment — Product Dimensions | 81.0 mm × 81.0 mm × 26.0 mm (3.19" × 3.19" × 1.02") (L × W × H) |
| General & Environment — Packaging Dimensions | 135.0 mm × 98.5 mm × 56.8 mm (5.31" × 3.88" × 2.24") (L × W × H) |
| General & Environment — Installation | Bracket mount |
| General & Environment — Net Weight | 105 g (0.23 lb) |
| General & Environment — Gross Weight | 175 g (0.39 lb) |
| General & Environment — Battery Life | 2.5 years in working status (triggered twice every week and alerts 120 s for each triggering) |
| General & Environment — Casing | PC + ABS |
| General & Environment — Temperature Measuring Range | –15 °C to +65 °C (+18.8 °F to +149 °F) (indoor) |
| General & Environment — Temperature Measuring Precision | ± 1 °C (± 33.8 °F) |
| General & Environment — Temperature Resolution | 1 °C (33.8 °F) |
| General & Environment — Certifications | CE | EN 50131-1:2006+A1:2009+A2:2017+A3:2020 | EN 50131-4:2019 | EN 50131-6:2017 | EN 50131-5-3:2017 | Security Grade 2 | Environmental Class II |
04Why choose this
Built for the way you actually use the DHI-ARA12-W2
Truly wireless
Battery power and a two-way 868 MHz link mean you mount it anywhere you want sound, with no cabling to run.
Tamper protected
A built-in tamper alarm fires the moment someone tries to remove it, so it cannot be silently disabled.
Low maintenance
Around 2.5 years on CR123A batteries with a low-battery warning keeps upkeep to a minimum.
05Where it fits
Right at home in these scenarios
Central indoor alarm
Mount it in a hallway or stairwell so a triggered alarm is heard throughout the home.
Apartments and small offices
Use a lower volume level where a full-power outdoor siren would be too much, while still alerting occupants.
Pair with an outdoor siren
Run it alongside the ARA13-W2 so the alarm is loud both inside and outside the building.
Expanding a system
Add a second indoor siren to a larger home so upstairs and downstairs are both covered.
06Setup
Installation & setup
-
01
What's in the box
One DHI-ARA12-W2 indoor siren with mounting bracket and 2 x CR123A batteries. A Dahua AirShield hub is required and not included.
-
02
Installation requirements
Fix the bracket to an indoor wall in a central, audible spot, clip on the siren and enrol it to your AirShield hub through the DMSS app. Use the test mode and signal-strength check to confirm a good two-way link, then trigger a test alarm to set the volume level before arming.
08Questions
Frequently asked about the DHI-ARA12-W2
Q.01
Does the ARA12-W2 siren work on its own?
No. It is a wireless siren for the Dahua AirShield system and needs an AirShield hub. The hub decides when to sound it, so on its own it has nothing to trigger it.
Q.02
How loud is 84 dB, and can I turn it down?
84 dB at one metre is loud for an indoor space, similar to a busy street or an alarm clock right beside you, and it is meant to be startling and impossible to sleep through. Three volume levels let you set it lower for a small flat or higher for a larger home or office.
Q.03
Is this an indoor or outdoor siren?
It is an indoor siren, built to be heard clearly inside the building. For a weatherproof sound-and-strobe siren on an outside wall, use the outdoor ARA13-W2 instead, or run both for inside and outside coverage.
Q.04
Do I need to run any wiring?
No. It is fully wireless and battery powered, so it mounts on its bracket wherever you want the sound, with no cabling to the hub or to power.
Q.05
What happens if someone tries to rip it off the wall?
It has a built-in tamper alarm that triggers immediately if the siren is removed or interfered with, so an intruder cannot quietly disable it without setting off the alarm.
Q.06
How long do the batteries last?
It runs on two CR123A batteries for around 2.5 years in normal use, with a low-battery warning before they run out. CR123A cells are a standard, widely available type you can replace yourself.
Q.07
How many sirens can one system have?
A Dahua AirShield hub supports up to six sirens, so you can place indoor and outdoor sirens around a property to make sure an alarm is heard everywhere.
Q.08
Will it tell me if the signal is weak?
Yes. It has a signal-strength check and a test mode so you can confirm a reliable two-way link to the hub during setup before you rely on it.
Buying from Smarket
Is your Hikvision, Dahua, HiLook and TP-Link VIGI stock genuine Australian stock?
Yes, 100%. Every Hikvision, Dahua, HiLook and TP-Link VIGI product we sell is a genuine Australian-market model sourced through Australian supply chains — never grey imports. That means factory-sealed units, Australian-region firmware that works with the official apps out of the box, and a full 3-year local warranty.
How long does delivery take?
Metro delivery usually takes 2–4 business days after dispatch, and regional areas may take longer. You'll receive a tracking number by email as soon as your order leaves the warehouse.
How much is shipping?
Standard shipping is free on all orders over $300 AUD, Australia-wide. Orders under $300 ship at a flat rate of $25, calculated at checkout. Tracking is included on every order.
What warranty do you offer?
All cameras, NVRs and DVRs come with a 3-year back-to-base manufacturer warranty covering defects in materials and workmanship, in addition to your rights under Australian Consumer Law. Hard drives and accessories are covered as set out in our Warranty Policy.
What is your return policy?
You have 30 days from the day you receive your order to request a change-of-mind return. Items must be unopened, factory-sealed and in resalable condition. A 15% restocking fee applies and return postage is at your cost. Faulty or incorrectly supplied items are different: we cover the return shipping and refund or replace at no charge. Read the full Return & Refund Policy.
Do you offer installation?
We can connect you with licensed installers in Sydney and Melbourne. Installation typically starts from around $200 per camera depending on cable runs and site conditions. Email sales@smarket.com.au with your address and camera count for a quote.
10Bundles
Recommended packages
Pair it with an AirShield hub (required)
The siren needs a hub to sound — build your system on the DHI-ARC3800H-FW2 Alarm Hub 2, or the smaller DHI-ARC3000H-FW2 hub.
Add outdoor sound and strobe
For a weatherproof siren and flashing strobe on an outside wall, add the ARA13-W2 outdoor siren.
Add detection and arming
Trigger the siren with detectors such as a ARD1233-W2 PIR detector or ARD323-W2 door contact, and arm with the ARK30T-W2 keypad or ARA24-W2 keyfob.
Want a ready-made system?
Start from a bundled AirShield starter kit and add sirens to suit the building.