At a glance
- Sensor
- Water leak detector
- Battery Life
- 3 years when triggered once a day
- Operating Temperature
- Indoor:, 10 °C to +55 °C
- Installation
- Plane mount
- Carrier Frequency
- 433.1 MHz to 434.6 MHz
- Communication Distance
- Up to 800 m (2624.67 ft) in an open space
Dahua ARD912-W2 Wireless Water-Leak Detector
₹4,278 Incl. GST
₹3,625 + 18% GST
At a glance
- Sensor
- Water leak detector
- Battery Life
- 3 years when triggered once a day
- Operating Temperature
- Indoor:, 10 °C to +55 °C
- Installation
- Plane mount
- Carrier Frequency
- 433.1 MHz to 434.6 MHz
- Communication Distance
- Up to 800 m (2624.67 ft) in an open space
Floor sensor that alerts your phone through the Dahua alarm when water reaches it, for use under washing machines, water heaters, sinks or AC units. Adjustable sensitivity, IPX5 housing, about 3 years on one CR123A battery.
- WarrantyManufacturer warranty under Dahua's terms. Warranty claims
- DeliveryPrice, availability and delivery charges are confirmed in your quotation. Shipping and delivery
- InstallationPlane mount
Overview
The Dahua ARD912-W2 is a wireless water leak sensor. Placed on the floor, it detects water reaching its probes and sends an alarm to a Dahua wireless hub over two-way 433 MHz radio, so you get an app alert before a small leak becomes serious damage. Use it under a washing machine, water heater, kitchen sink, AC unit or water purifier at home, or in a server room, pantry, basement or pump room in a commercial building.
Is it right for you?
- It suits any floor spot where a leak would start, on a Dahua 433 MHz wireless alarm.
- It raises an alarm only and does not shut off the water supply by itself.
- Place one at each likely leak point, since it senses only where it sits.
- Indoor use only, -10 to 55 °C.
Key features
- Water leak sensing with adjustable sensitivity.
- IPX5 rated housing, so splashes in a wet location do not harm it.
- Up to 800 m open-space radio range with frequency hopping and AES128 (Advanced Encryption Standard) encryption.
- Single multi-status LED for pairing, power and alarm.
- Low battery detection and firmware updates through the cloud.
- Compact 84.7 x 84.7 x 32.5 mm body that sits flat on the floor.
- One CR123A battery rated for about 3 years when triggered once a day.
What else you need
A Dahua 433 MHz wireless hub, such as the ARC3000H, which forwards the leak alarm to the Dahua app, phone calls or SMS according to the hub settings, and one CR123A battery.
Installation
No installer is needed. Fit the battery, pair it with the hub in the Dahua app, then place it flat on the floor where water would collect first, for example under the appliance or beside the drain.
Software and licences
Pairing, sensitivity and notifications are set in the Dahua app through the hub.
Before you buy
- It alerts you to water; it does not shut off the supply.
- It has no tamper switch.
- Indoor use only.
Features

Size and fit
- Net Weight
- 0.1 kg (0.22 lb)
- Installation
- Plane mount
Technical specifications
Key facts
- What is it?
- Fire & Environmental DetectorsBrand Dahua, model ARD912-W2
- How is it powered?
- CR123A × 1
- Can it be used outdoors?
- IPX5
- Which documents are available?
- Datasheet, user manual, installation / drawing (2), safety / legal information, quick start guide, and more Open documents
- Can SecurityGearHub help with installation?
- Setup guidanceManuals, wiring guides and answers to setup questions. On-site work is arranged separately where available. Ask about installation
- Not stated by the manufacturer
- box contents
RelatedDocumentsAll Dahua documents
General
- Model
- ARD912-W2
- Indicator Light
- 1 for multiple statuses (pairing, power status, and alarm)
- Button
- Power switch button
- Remote Update
- Cloud update
- Low Battery Detection
- Yes
- Sensor
- Water leak detector
- Sensitivity
- Adjustable
- Operating Current
- 28.5 uA
- Alarm Current
- 5.8 mA
- Carrier Frequency
- 433.1 MHz to 434.6 MHz
- Communication Mechanism
- Two-way
- Communication Distance
- Up to 800 m (2624.67 ft) in an open space
- Encryption Mode
- AES128
- Frequency Hopping
- Yes
- Installation
- Plane mount
Input
- Power Supply
- CR123A × 1
- Battery Life
- 3 years when triggered once a day.
- Power Consumption
- Max 144 mW
Protection
- Tamper
- No
Environment
- Operating Temperature
- Indoor:, 10 °C to +55 °C (+14 °F to +131 °F)
- Operating Humidity
- 10% to 90% (RH)
- Storage Temperature
- , 10 °C to +55 °C (+14 °F to +131 °F)
- Storage Humidity
- 10% to 90% (RH)
- Protection
- IPX5
Physical
- 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)
- Casing Material
- PC + ABS
Approvals
- Certifications
- CE, FCC
- Warranty
- Manufacturer warranty under Dahua's terms. How claims work
Product attributes and shipping details
| Brand | Dahua |
|---|---|
| IP Rating | IPX5 |
| Radio Frequency | 433.1 MHz–434.6 MHz |
Downloads
Documentation
- Dahua ARD912-W2 datasheetDatasheet · This model · 328.7 KBDownload
- Dahua ARD912-W2 product pageOnline specifications · This model · dahuasecurity.comView official page
Certificate and compliance document (1)
- Dahua important safeguards and warnings V3.0.0Safety / legal information · General · materialfile.dahuasecurity.comDownload
User manual
Installation guide
Series documents can differ from your exact model. Report a wrong or missing file
Questions about this product
Does it shut off the water?
No. It raises an alarm only. Shutting the supply is up to you or a separate valve.
How long does the battery last?
About 3 years on one CR123A when triggered once a day.
Can it get wet?
The housing is IPX5 rated, so splashes do not harm it. It is for indoor use.
How far can it be from the hub?
Up to 800 m in open space. Walls reduce this, so check the link after placing it.
Does it need an internet connection?
The hub needs its connection to send app, call or SMS alerts. The sensor itself talks to the hub by 433 MHz radio.
Ask about this modelSetup, compatibility, what is in the box
Answers are automated. Do not enter personal or account details.
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