The Dahua AirShield DHI-ARD912-W2(D) Wireless Water Leak Detector provides reliable indoor water leak detection for pipes, bathrooms, sinks, washing machines, dishwashers and other water-sensitive areas. Featuring 433.1–434.6 MHz two-way wireless communication, AES128 encryption, frequency hopping, adjustable sensitivity, IPX5 protection and up to 800 m open-space communication distance, the DHI-ARD912-W2(D) is a practical wire-free detector for compatible Dahua wireless alarm systems.
Designed to detect water leakage in monitored indoor areas, the detector can trigger alarms and enable timely notifications through the connected alarm system. This helps users respond to leaks around plumbing fixtures and appliances before they develop into more significant problems.
Stable & Secure Wireless Communication
The DHI-ARD912-W2(D) uses two-way wireless communication and frequency-hopping technology to support stable communication with the alarm system. It also supports jamming detection and AES128 encryption, providing additional protection for wireless communications.
The specified wireless communication distance is up to 800 metres in open space, making the detector suitable for a variety of compatible installations. Actual range will depend on the building layout, construction materials, interference and other environmental factors.
Adjustable Water Leak Detection
Detection sensitivity is adjustable, allowing the DHI-ARD912-W2(D) to be configured according to installation requirements.
Dahua also specifies environmental temperature display and overheating alarm support, adding environmental monitoring functionality alongside water leak detection.
Long-Life Battery Operation
The detector operates from a single CR123A battery and has a manufacturer-specified battery life of approximately 3 years when triggered once per day.
Built-in low-battery detection helps identify when battery replacement is required. With no signal wiring required, the detector provides a straightforward solution for adding leak detection to compatible wireless alarm installations.
Flexible Installation
Unlike the standard DHI-ARD912-W2 specification, the DHI-ARD912-W2(D) supports both plane mounting and wall mounting, providing additional installation flexibility.
Its compact enclosure measures just 84.7 × 84.7 × 32.5 mm, with PC + ABS construction and an IPX5 protection rating.
Main Features
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Wireless indoor water leak detection
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433.1 MHz–434.6 MHz wireless frequency
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Up to 800 m communication distance in open space
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Two-way wireless communication
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Frequency-hopping technology
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AES128 wireless communication encryption
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Jamming detection support
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Adjustable water detection sensitivity
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Environmental temperature display
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Overheating alarm support
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Cloud-based remote firmware updates
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Automatic restoration following a failed cloud update
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Low-battery detection
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Multi-status LED for pairing, power and alarm status
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CR123A battery operation
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Up to 3-year specified battery life when triggered once per day
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Plane-mount and wall-mount installation
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No signal wiring required
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IPX5 protection rating
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PC + ABS enclosure
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CE and FCC certifications
What's Included in the Box
Detailed Specifications
| Specification |
Details |
| Brand |
Dahua |
| Series |
AirShield |
| Product Type |
Wireless Water Leak Detector |
| Model / Part Number |
DHI-ARD912-W2(D) |
| Sensor |
Water leak detector |
| Sensitivity |
Adjustable |
| Indicator Light |
1 × 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 Mode |
AES128 |
| Frequency Hopping |
Yes |
| Power Supply |
1 × CR123A battery |
| Battery Life |
Approx. 3 years when triggered once per day |
| Maximum Power Consumption |
144 mW |
| Operating Temperature |
–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 × 84.7 × 32.5 mm |
| Packaging Dimensions |
135 × 98 × 56 mm |
| Net Weight |
0.1 kg |
| Gross Weight |
0.2 kg |
| Installation |
Plane mount, wall mount |
| Casing Material |
PC + ABS |
| Protection Rating |
IPX5 |
| Certifications |
CE, FCC |
Practical Use Scenarios
The DHI-ARD912-W2(D) is designed for indoor areas where early identification of water leakage is important. Typical applications include monitoring around:
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Indoor water pipes and plumbing
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Kitchen and bathroom sinks
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Baths and wet areas
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Washing machines
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Dishwashers
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Other suitable indoor water-sensitive locations
Its wireless operation is particularly useful where running additional signal cabling would be difficult or undesirable.
Warranty Information
2 year Warranty
About Dahua
Dahua Technology develops security, surveillance, alarm and IoT products for residential, commercial and enterprise applications. The Dahua AirShield range includes wireless hubs, detectors and alarm accessories designed to provide flexible wireless security and environmental monitoring solutions.
SKU / Product Code
SKU: DHI-ARD912-W2(D)
Manufacturer Part Number: DHI-ARD912-W2(D)
Product Name: Dahua AirShield Wireless Water Leak Detector
Wireless Variant: 433.1 MHz–434.6 MHz
Excellence for the Australian and New Zealand Market
The Dahua AirShield DHI-ARD912-W2(D) combines encrypted wireless communication, frequency hopping, adjustable leak detection sensitivity, battery-powered operation and flexible mounting options in a compact indoor water leak detector.
For Australian and New Zealand installations, purchasers and installers should confirm that the 433.1–434.6 MHz DHI-ARD912-W2(D) variant, its associated Dahua hub and the complete installation comply with all applicable local radio, electrical, building and regulatory requirements. The supplied manufacturer documentation lists CE and FCC certifications; no Australian-specific certification should be inferred from those certifications alone.
FAQs
What is the Dahua DHI-ARD912-W2(D) Wireless Water Leak Detector?
The DHI-ARD912-W2(D) is a wireless indoor detector designed to identify water leaks around pipes, baths, sinks, washing machines, dishwashers and other suitable water-sensitive areas.
What frequency does the DHI-ARD912-W2(D) operate on?
The DHI-ARD912-W2(D) operates within the 433.1 MHz–434.6 MHz carrier-frequency range.
What is the wireless range of the DHI-ARD912-W2(D)?
The DHI-ARD912-W2(D) has a manufacturer-specified wireless communication distance of up to 800 metres (2,624.67 ft) in open space. Actual indoor range depends on environmental and installation conditions.
Does the DHI-ARD912-W2(D) support two-way wireless communication?
Yes. The DHI-ARD912-W2(D) uses two-way wireless communication and also supports frequency hopping to improve communication stability.
Does the DHI-ARD912-W2(D) use encrypted communication?
Yes. Wireless communication on the DHI-ARD912-W2(D) supports AES128 encryption.
Does the DHI-ARD912-W2(D) support jamming detection?
Yes. The DHI-ARD912-W2(D) supports wireless jamming detection as part of its communication features.
Can the sensitivity of the DHI-ARD912-W2(D) be adjusted?
Yes. The DHI-ARD912-W2(D) supports adjustable water leak detection sensitivity.
What battery does the DHI-ARD912-W2(D) use?
The DHI-ARD912-W2(D) is powered by one CR123A battery.
How long does the battery last in the DHI-ARD912-W2(D)?
Dahua specifies approximately 3 years of battery life when the DHI-ARD912-W2(D) is triggered once per day. Actual battery life can vary according to operating and environmental conditions.
Does the DHI-ARD912-W2(D) have low-battery detection?
Yes. The DHI-ARD912-W2(D) includes low-battery detection to indicate when battery attention is required.
Can the DHI-ARD912-W2(D) be wall mounted?
Yes. Dahua specifies both plane mounting and wall mounting for the DHI-ARD912-W2(D).
Is the DHI-ARD912-W2(D) waterproof?
The DHI-ARD912-W2(D) has an IPX5 protection rating. It is specified as an indoor water leak detector and should be installed according to Dahua's installation instructions.
Does the DHI-ARD912-W2(D) require wiring?
The DHI-ARD912-W2(D) uses wireless communication and battery power, so it does not require signal wiring for normal wireless operation.
Does the DHI-ARD912-W2(D) support cloud firmware updates?
Yes. The DHI-ARD912-W2(D) supports cloud updates and is specified to automatically restore if a cloud update fails.
Does the DHI-ARD912-W2(D) monitor temperature?
Dahua states that the DHI-ARD912-W2(D) can display the temperature of its surrounding environment and supports an overheating alarm.
What are the dimensions of the DHI-ARD912-W2(D)?
The DHI-ARD912-W2(D) measures 84.7 × 84.7 × 32.5 mm and has a specified net weight of 0.1 kg.
What is the difference between DHI-ARD912-W2(D) and DHI-ARD912-W2?
According to Dahua's specifications, both models share the same 433.1–434.6 MHz frequency, up-to-800 m open-space communication distance and core detection features. One documented installation difference is that the DHI-ARD912-W2(D) supports plane mounting and wall mounting, whereas the standard DHI-ARD912-W2 specification lists plane mounting.
