The Dahua AirShield DHI-ARD912-W2 Wireless Water Leak Detector is a compact indoor wireless leak sensor designed to detect water leaks around pipes, baths, sinks, washing machines and dishwashers. Featuring 433.1–434.6 MHz two-way wireless communication, AES128 encryption, frequency hopping, adjustable sensitivity, low-battery detection and IPX5 protection, the DHI-ARD912-W2 provides an easy-to-install, wire-free solution for water leak monitoring in compatible Dahua wireless alarm systems.

Designed for early detection of unwanted water, the DHI-ARD912-W2 can trigger an alarm and enable timely event notifications through the connected alarm system. Its wireless design eliminates the need to run signal cabling to the detector, making it practical for residential and commercial indoor applications where leaks could otherwise remain unnoticed.
Reliable wireless communication is supported through frequency-hopping technology and two-way communication. The detector also supports jamming detection and AES128 communication encryption, helping maintain secure and stable wireless connectivity.
The DHI-ARD912-W2 supports adjustable detection sensitivity, allowing the detector to be configured according to the installation environment. Dahua also specifies temperature display and overheating alarm functionality for this model.

Main Features
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Wireless indoor water leak detection
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Designed for pipes, baths, sinks, washing machines and dishwashers
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433.1 MHz–434.6 MHz wireless carrier frequency
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Up to 800 m wireless communication distance in open space
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Two-way wireless communication
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Frequency-hopping technology for communication stability
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AES128 communication encryption
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Jamming detection support
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Adjustable water leak detection sensitivity
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Temperature display and overheating alarm support
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Low-battery detection
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Cloud-based remote firmware updates
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Automatic restoration if a cloud update fails
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Multi-status indicator for pairing, power and alarm
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Single CR123A battery operation
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Up to 3-year specified battery life when triggered once per day
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Compact PC + ABS enclosure
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IPX5 protection
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Easy installation without signal wiring
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CE and FCC certifications listed for this 433 MHz model
What's Included in the Box
Detailed Specifications
| Specification |
Details |
| Brand |
Dahua |
| Product Type |
Wireless Water Leak Detector |
| Model / Part Number |
DHI-ARD912-W2 |
| Sensor |
Water leak detector |
| Sensitivity |
Adjustable |
| Indicator Light |
1 × multi-status indicator for pairing, power status and alarm |
| Button |
Power switch button |
| Remote Update |
Cloud update |
| Low Battery Detection |
Yes |
| Tamper |
No |
| Operating Current |
28.5 µA |
| Alarm Current |
5.8 mA |
| Carrier Frequency |
433.1 MHz–434.6 MHz |
| Communication Mechanism |
Two-way |
| Communication Distance |
Up to 800 m (2,624.67 ft) in open space |
| Encryption |
AES128 |
| Frequency Hopping |
Yes |
| Power Supply |
1 × CR123A |
| Battery Life |
Up to 3 years when triggered once per day |
| Maximum Power Consumption |
144 mW |
| Operating Temperature |
–10°C to +55°C |
| Operating Humidity |
10%–90% RH |
| Storage Temperature |
–10°C to +55°C |
| Storage Humidity |
10%–90% RH |
| Product Dimensions |
84.7 × 84.7 × 32.5 mm |
| Packaging Dimensions |
135 × 98 × 56 mm |
| Net Weight |
0.1 kg |
| Gross Weight |
0.2 kg |
| Installation |
Plane mount |
| Casing Material |
PC + ABS |
| Protection Rating |
IPX5 |
| Certifications |
CE, FCC |
Practical Use Scenarios
The DHI-ARD912-W2 is suitable for indoor locations where an unnoticed leak could cause damage. Typical applications include positioning the detector near plumbing and pipework, beneath or adjacent to sinks, around baths, near washing machines and beside dishwashers.
It can also be useful in residential properties, offices and other indoor facilities using a compatible Dahua wireless alarm system, providing an additional layer of environmental monitoring alongside conventional security detection.

Warranty Information
2 year Warranty
About Dahua
Dahua Technology develops video surveillance, security, alarm and IoT solutions for residential, commercial and enterprise applications. The AirShield wireless product range provides wireless alarm devices designed to integrate security and environmental detection into compatible Dahua alarm systems.
SKU
SKU: DHI-ARD912-W2
Manufacturer Part Number: DHI-ARD912-W2
Product Type: Wireless Water Leak Detector
Excellence for the Australian and New Zealand Market
The Dahua AirShield DHI-ARD912-W2 Wireless Water Leak Detector offers a compact wireless solution for indoor water leak monitoring. Its wire-free installation, adjustable sensitivity, encrypted two-way communication and battery-powered operation make it suitable for compatible security installations where early water leak detection is required.
For Australian and New Zealand projects, installers and purchasers should verify that the 433 MHz DHI-ARD912-W2 variant and the complete alarm system meet all applicable local radio, electrical, installation and regulatory requirements before deployment. Certifications and approvals can vary between regional product variants.
FAQs
What is the Dahua DHI-ARD912-W2 Wireless Water Leak Detector used for?
The DHI-ARD912-W2 is designed to detect indoor water leaks around locations such as pipes, baths, sinks, washing machines and dishwashers and trigger an alarm through a compatible wireless alarm system.
What wireless frequency does the Dahua DHI-ARD912-W2 use?
The DHI-ARD912-W2 operates within the 433.1 MHz–434.6 MHz carrier-frequency range.
What is the wireless range of the Dahua DHI-ARD912-W2?
The DHI-ARD912-W2 supports a specified communication distance of up to 800 metres (2,624.67 ft) in open space. Actual indoor range can vary because of walls, building materials, interference and installation conditions.
Does the Dahua DHI-ARD912-W2 support encrypted wireless communication?
Yes. The DHI-ARD912-W2 uses AES128 encryption and supports two-way wireless communication, frequency hopping and jamming detection.
Is the sensitivity adjustable on the Dahua DHI-ARD912-W2?
Yes. The water leak detection sensitivity of the DHI-ARD912-W2 is adjustable.
What battery does the Dahua DHI-ARD912-W2 use?
The DHI-ARD912-W2 is powered by one CR123A battery.
How long does the Dahua DHI-ARD912-W2 battery last?
Dahua specifies a battery life of approximately 3 years when the DHI-ARD912-W2 is triggered once per day. Actual battery life can vary with operating conditions and usage.
Does the Dahua DHI-ARD912-W2 require wiring?
The DHI-ARD912-W2 is designed for wireless operation and does not require signal wiring, simplifying installation in suitable indoor locations.
Is the Dahua DHI-ARD912-W2 water resistant?
The DHI-ARD912-W2 carries an IPX5 protection rating. It is specified as an indoor detector and should be installed according to Dahua's installation instructions.
What are the dimensions of the Dahua DHI-ARD912-W2?
The DHI-ARD912-W2 measures 84.7 × 84.7 × 32.5 mm and has a specified net weight of approximately 0.1 kg.
Does the Dahua DHI-ARD912-W2 provide low-battery detection?
Yes. The DHI-ARD912-W2 supports low-battery detection so the alarm system can indicate when battery attention is required.
Does the Dahua DHI-ARD912-W2 support firmware updates?
Yes. The DHI-ARD912-W2 supports cloud updates and is specified to automatically restore if a cloud update fails.
Where can the Dahua DHI-ARD912-W2 be installed?
The DHI-ARD912-W2 is intended for indoor water leak monitoring and can be used around pipes, baths, sinks, washing machines and dishwashers, subject to Dahua's installation requirements.
Does the Dahua DHI-ARD912-W2 have a tamper function?
No. Dahua's technical specification lists the DHI-ARD912-W2 tamper function as No.