Dahua DHI-ARD912-W2 Wireless Water Leak Detector
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Vendor:
Dahua
Dahua DHI-ARD912-W2 Wireless Water Leak Detector
SKU: DHI-ARD912-W2
Description
The Dahua DHI-ARD912-W2 is a wireless water-leak detector for the Dahua AirShield alarm system. Place it on the floor by a washing machine, dishwasher, hot-water unit or under a sink and it raises an alarm the moment water reaches its sensor, so you catch a leak before it does real damage. Sensitivity is adjustable to suit the spot, the casing is IPX5 water-resistant, and it links to your AirShield hub over an encrypted 868 MHz two-way connection. An AirShield hub is required and sold separately.
Key points
- Alarms as soon as water reaches the sensor
- Adjustable sensitivity to suit the location
- IPX5 water-resistant casing; no wiring, easy to place
- 868 MHz two-way radio with AES128 encryption and frequency hopping
- Range up to 1,200 m in open space to the hub
- Temperature display and overheat alarm; CR123A battery, around 3 years
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.
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Dahua DHI-ARD912-W2 Wireless Water Leak Detector
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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-ARD912-W2 is
The Dahua DHI-ARD912-W2 watches for water where you do not want it. Set it on the floor near a washing machine, dishwasher, hot-water system, sink or a pipe run, and it raises an alarm the instant water bridges its sensor — early warning that turns a quiet leak into a phone notification before it soaks a floor or ceiling. Sensitivity is adjustable so you can tune it to the spot and keep nuisance triggers down.
It is quick to live with. There is no wiring — it mounts flat with screws or adhesive — and it links to the hub over 868 MHz two-way radio with AES128 encryption and frequency hopping at up to 1,200 m in open space. Beyond leaks it also reports the ambient temperature and can raise an overheat alarm, and a multi-status LED plus the DMSS app keep you across power, pairing and alarm state.
A few honest notes: the casing is IPX5 water-resistant so it copes with splashes and damp areas, but it is a leak sensor, not a submersible probe. It runs on a CR123A cell for around three years when it triggers about once a day, and like every AirShield device it needs a hub to work — it is the kind of accessory you add for property protection alongside intrusion detection. It is genuine Australian Dahua stock with local 3-year warranty and support.
02Engineering
DHI-ARD912-W2 specifications
- Wireless water-leak detector for the Dahua AirShield alarm system
- Alarms as soon as water reaches the sensor pins
- Adjustable sensitivity to suit the location and cut nuisance triggers
- IPX5 water-resistant casing; screw or adhesive mounting, no wiring
- 868 MHz two-way communication with AES128 encryption and frequency hopping
- Range up to 1,200 m in open space to the AirShield hub
- Ambient temperature display and overheat alarm; low-battery warning; cloud update
- CR123A battery, around 3 years of life; indoor (-10 to +55 C); requires an AirShield hub
- Alarms as soon as water reaches the sensor pins
- Adjustable sensitivity to suit the location and cut nuisance triggers
- IPX5 water-resistant casing; screw or adhesive mounting, no wiring
- 868 MHz two-way communication with AES128 encryption and frequency hopping
- Range up to 1,200 m in open space to the AirShield hub
- Ambient temperature display and overheat alarm; low-battery warning; cloud update
- CR123A battery, around 3 years of life; indoor (-10 to +55 C); requires an AirShield hub
03Full datasheet
Detailed specifications
Network & Storage
| Feature | Detail |
|---|---|
| Remote Update | Cloud update |
| Carrier Frequency | 868.0 MHz–868.6 MHz |
| Communication Mechanism | Two-way |
| Communication Distance | Up to 1,200 m (3937.01 ft) in an open space |
| Encryption Mode | AES128 |
| Frequency Hopping | Yes |
Event & Alarm
| Feature | Detail |
|---|---|
| Sensor | Water leak detector |
| Sensitivity | Adjustable |
| Low Battery Detection | Yes |
| Tamper | No |
Interface
| Feature | Detail |
|---|---|
| Indicator Light | 1 for multiple statuses (pairing, power status, and alarm) |
| Button | Power switch button |
General & Environment
| Feature | Detail |
|---|---|
| Power Supply | CR123A × 1 |
| Battery Life | 3 years when triggered once a day. |
| Power Consumption | Max 144 mW |
| Operating Current | 28.5 uA |
| Alarm Current | 5.8 mA |
| Operating Temperature | Indoor: –10 °C to +55 °C (+14 °F to +131 °F) |
| Operating Humidity | 10%–90% (RH) |
| Storage Temperature | –10 °C to +55 °C (+14 °F to +131 °F) |
| Storage Humidity | 10%–90% (RH) |
| Product Dimensions | 84.7 mm × 84.7 mm × 32.5 mm (3.33" × 3.33" × 1.28") |
| Packaging Dimensions | 135.0 mm × 98.0 mm × 56.0 mm (5.32" × 3.86" × 2.20") |
| Net Weight | 0.1 kg (0.22 lb) |
| Gross Weight | 0.2 kg (0.44 lb) |
| Installation | Plane mount |
| Casing Material | PC + ABS |
| Protection | IPX5 |
| Certifications | CE |
| Network & Storage — Remote Update | Cloud update |
|---|---|
| Network & Storage — Carrier Frequency | 868.0 MHz–868.6 MHz |
| Network & Storage — Communication Mechanism | Two-way |
| Network & Storage — Communication Distance | Up to 1,200 m (3937.01 ft) in an open space |
| Network & Storage — Encryption Mode | AES128 |
| Network & Storage — Frequency Hopping | Yes |
| Event & Alarm — Sensor | Water leak detector |
| Event & Alarm — Sensitivity | Adjustable |
| Event & Alarm — Low Battery Detection | Yes |
| Event & Alarm — Tamper | No |
| Interface — Indicator Light | 1 for multiple statuses (pairing, power status, and alarm) |
| Interface — Button | Power switch button |
| General & Environment — Power Supply | CR123A × 1 |
| General & Environment — Battery Life | 3 years when triggered once a day. |
| General & Environment — Power Consumption | Max 144 mW |
| General & Environment — Operating Current | 28.5 uA |
| General & Environment — Alarm Current | 5.8 mA |
| General & Environment — Operating Temperature | Indoor: –10 °C to +55 °C (+14 °F to +131 °F) |
| General & Environment — Operating Humidity | 10%–90% (RH) |
| General & Environment — Storage Temperature | –10 °C to +55 °C (+14 °F to +131 °F) |
| General & Environment — Storage Humidity | 10%–90% (RH) |
| General & Environment — Product Dimensions | 84.7 mm × 84.7 mm × 32.5 mm (3.33" × 3.33" × 1.28") |
| General & Environment — Packaging Dimensions | 135.0 mm × 98.0 mm × 56.0 mm (5.32" × 3.86" × 2.20") |
| General & Environment — Net Weight | 0.1 kg (0.22 lb) |
| General & Environment — Gross Weight | 0.2 kg (0.44 lb) |
| General & Environment — Installation | Plane mount |
| General & Environment — Casing Material | PC + ABS |
| General & Environment — Protection | IPX5 |
| General & Environment — Certifications | CE |
04Why choose this
Built for the way you actually use the DHI-ARD912-W2
Tunable to the spot
Adjustable sensitivity keeps nuisance triggers down while still catching a genuine pool of water.
No wiring, easy to place
It mounts flat with screws or adhesive and runs on a battery, so it goes wherever the risk is.
More than a leak sensor
Ambient temperature reporting and an overheat alarm add a second layer of property protection.
05Where it fits
Right at home in these scenarios
Laundry and kitchen
Place it by a washing machine, dishwasher or under a sink where hoses and seals fail most often.
Hot-water and plant rooms
Watch a hot-water unit or pipe run, with the overheat alarm as a bonus in a warm space.
Bathrooms and basements
Catch overflow or seepage at the low point before it spreads through a floor.
Holiday homes and rentals
Get an early app alert about a leak at a property you are not living in day to day.
06Setup
Installation & setup
-
01
What's in the box
One DHI-ARD912-W2 water-leak detector with a CR123A battery and screw / adhesive mounting. A Dahua AirShield hub is required and not included.
-
02
Installation requirements
Sit it flat on the floor at the lowest point near the risk, fix it with screws or the adhesive pad, and enrol it to your AirShield hub in the DMSS app. Set the sensitivity to suit the spot, then pour a little water to confirm it alarms and the signal to the hub is good before relying on it.
08Questions
Frequently asked about the DHI-ARD912-W2
Q.01
Where should I put the ARD912-W2?
On the floor at the lowest point near anything that can leak — under a sink, beside a washing machine, dishwasher or hot-water unit, or along a pipe run. Water naturally flows to the low spot, so placing it there gives you the earliest warning.
Q.02
Does it work on its own?
No. It is a detector for the Dahua AirShield system and needs an AirShield hub. The hub receives the leak alarm and notifies you; on its own it has nothing to report to.
Q.03
How does it actually detect a leak?
It has a sensor on the base, and when water bridges the contacts it triggers an alarm immediately. Sensitivity is adjustable so you can set how much water it takes to alarm in a given spot.
Q.04
Will it false-alarm from humidity or a damp floor?
Adjustable sensitivity lets you tune it to the location so normal damp does not trip it while a genuine pool of water does. Placing it where water will collect rather than where it is merely humid also helps.
Q.05
Is it waterproof itself?
The casing is IPX5 water-resistant, so it shrugs off splashes and damp areas. It is a surface leak sensor, though, not a submersible probe, so it is meant to sit on the floor and detect water reaching it.
Q.06
How long does the battery last?
It runs on a single CR123A cell for around three years when it triggers about once a day, with a low-battery warning before it runs out. CR123A is a standard cell you can replace yourself.
Q.07
Does it do anything besides detect water?
Yes. It also reports the surrounding temperature and can raise an overheat alarm, which is useful near a hot-water unit or in a plant room as an extra warning.
Q.08
Is this genuine Australian Dahua stock?
Yes. It is the 868 MHz AirShield water-leak detector supplied as genuine Australian Dahua stock with local 3-year warranty and support, matching the AirShield hubs and peripherals sold here.
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 detector needs a hub to work — build your system on the DHI-ARC3800H-FW2 Alarm Hub 2, or the smaller DHI-ARC3000H-FW2 hub.
Add intrusion detection
Round out property protection with a ARD1233-W2 PIR detector and a ARD512-W2 glass-break detector.
Switch off on a leak
Pair it with an ARM7011-W2 wireless relay to switch a valve or shut-off circuit when a leak is detected (licensed wiring for any mains side).
Want a ready-made system?
Start from a bundled AirShield starter kit and add leak detection where it matters.