{"product_id":"dahua-airshield-dhi-ard912-w2d-wireless-water-leak-detector-433-mhz-aes128-ipx5","title":"Dahua AirShield DHI-ARD912-W2(D) Wireless Water Leak Detector – 433 MHz, AES128, IPX5","description":"\u003cp\u003eThe \u003cstrong\u003eDahua AirShield DHI-ARD912-W2(D) Wireless Water Leak Detector\u003c\/strong\u003e provides reliable indoor water leak detection for pipes, bathrooms, sinks, washing machines, dishwashers and other water-sensitive areas. Featuring \u003cstrong\u003e433.1–434.6 MHz two-way wireless communication, AES128 encryption, frequency hopping, adjustable sensitivity, IPX5 protection and up to 800 m open-space communication distance\u003c\/strong\u003e, the DHI-ARD912-W2(D) is a practical wire-free detector for compatible Dahua wireless alarm systems.\u003c\/p\u003e\n\u003cp\u003eDesigned 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.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0637\/2838\/6287\/files\/DHI-ARD912-W2_D_3.png?v=1790223486\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStable \u0026amp; Secure Wireless Communication\u003c\/h3\u003e\n\u003cp\u003eThe DHI-ARD912-W2(D) uses \u003cstrong\u003etwo-way wireless communication and frequency-hopping technology\u003c\/strong\u003e to support stable communication with the alarm system. It also supports \u003cstrong\u003ejamming detection and AES128 encryption\u003c\/strong\u003e, providing additional protection for wireless communications.\u003c\/p\u003e\n\u003cp\u003eThe specified wireless communication distance is \u003cstrong\u003eup to 800 metres in open space\u003c\/strong\u003e, 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.\u003c\/p\u003e\n\u003ch3\u003eAdjustable Water Leak Detection\u003c\/h3\u003e\n\u003cp\u003eDetection sensitivity is adjustable, allowing the DHI-ARD912-W2(D) to be configured according to installation requirements.\u003c\/p\u003e\n\u003cp\u003eDahua also specifies environmental temperature display and overheating alarm support, adding environmental monitoring functionality alongside water leak detection.\u003c\/p\u003e\n\u003ch3\u003eLong-Life Battery Operation\u003c\/h3\u003e\n\u003cp\u003eThe detector operates from a single \u003cstrong\u003eCR123A battery\u003c\/strong\u003e and has a manufacturer-specified battery life of approximately \u003cstrong\u003e3 years when triggered once per day\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eBuilt-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.\u003c\/p\u003e\n\u003ch3\u003eFlexible Installation\u003c\/h3\u003e\n\u003cp\u003eUnlike the standard DHI-ARD912-W2 specification, the \u003cstrong\u003eDHI-ARD912-W2(D) supports both plane mounting and wall mounting\u003c\/strong\u003e, providing additional installation flexibility.\u003c\/p\u003e\n\u003cp\u003eIts compact enclosure measures just \u003cstrong\u003e84.7 × 84.7 × 32.5 mm\u003c\/strong\u003e, with PC + ABS construction and an \u003cstrong\u003eIPX5 protection rating\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eMain Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWireless indoor water leak detection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e433.1 MHz–434.6 MHz wireless frequency\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUp to 800 m communication distance in open space\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTwo-way wireless communication\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFrequency-hopping technology\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAES128 wireless communication encryption\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eJamming detection support\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAdjustable water detection sensitivity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnvironmental temperature display\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOverheating alarm support\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCloud-based remote firmware updates\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAutomatic restoration following a failed cloud update\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLow-battery detection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMulti-status LED for pairing, power and alarm status\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCR123A battery operation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUp to 3-year specified battery life when triggered once per day\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePlane-mount and wall-mount installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNo signal wiring required\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIPX5 protection rating\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePC + ABS enclosure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCE and FCC certifications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat's Included in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e1 × Dahua DHI-ARD912-W2(D) Wireless Water Leak Detector\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0637\/2838\/6287\/files\/DHI-ARD912-W2_D_1.png?v=1790223486\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eDetailed Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eDahua\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eAirShield\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eWireless Water Leak Detector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel \/ Part Number\u003c\/td\u003e\n\u003ctd\u003eDHI-ARD912-W2(D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor\u003c\/td\u003e\n\u003ctd\u003eWater leak detector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003eAdjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicator Light\u003c\/td\u003e\n\u003ctd\u003e1 × indicator for pairing, power status and alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eButton\u003c\/td\u003e\n\u003ctd\u003ePower switch button\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote Update\u003c\/td\u003e\n\u003ctd\u003eCloud update\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow Battery Detection\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTamper\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e28.5 µA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm Current\u003c\/td\u003e\n\u003ctd\u003e5.8 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarrier Frequency\u003c\/td\u003e\n\u003ctd\u003e433.1 MHz–434.6 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Mechanism\u003c\/td\u003e\n\u003ctd\u003eTwo-way\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Distance\u003c\/td\u003e\n\u003ctd\u003eUp to 800 m (2,624.67 ft) in open space\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEncryption Mode\u003c\/td\u003e\n\u003ctd\u003eAES128\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Hopping\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e1 × CR123A battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Life\u003c\/td\u003e\n\u003ctd\u003eApprox. 3 years when triggered once per day\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Power Consumption\u003c\/td\u003e\n\u003ctd\u003e144 mW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e–10°C to +55°C (+14°F to +131°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e10%–90% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e–10°C to +55°C (+14°F to +131°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Humidity\u003c\/td\u003e\n\u003ctd\u003e10%–90% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Dimensions\u003c\/td\u003e\n\u003ctd\u003e84.7 × 84.7 × 32.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackaging Dimensions\u003c\/td\u003e\n\u003ctd\u003e135 × 98 × 56 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e0.1 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight\u003c\/td\u003e\n\u003ctd\u003e0.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003ePlane mount, wall mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCasing Material\u003c\/td\u003e\n\u003ctd\u003ePC + ABS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIPX5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCE, FCC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003ePractical Use Scenarios\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e is designed for indoor areas where early identification of water leakage is important. Typical applications include monitoring around:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eIndoor water pipes and plumbing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eKitchen and bathroom sinks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBaths and wet areas\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWashing machines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDishwashers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOther suitable indoor water-sensitive locations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIts wireless operation is particularly useful where running additional signal cabling would be difficult or undesirable.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0637\/2838\/6287\/files\/DHI-ARD912-W2_D_2.png?v=1790223486\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eWarranty Information\u003c\/h2\u003e\n\u003cp\u003e2 year Warranty \u003c\/p\u003e\n\u003ch2\u003eAbout Dahua\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDahua Technology\u003c\/strong\u003e 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.\u003c\/p\u003e\n\u003ch2\u003eSKU \/ Product Code\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e DHI-ARD912-W2(D)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e DHI-ARD912-W2(D)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Dahua AirShield Wireless Water Leak Detector\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWireless Variant:\u003c\/strong\u003e 433.1 MHz–434.6 MHz\u003c\/p\u003e\n\u003ch2\u003eExcellence for the Australian and New Zealand Market\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDahua AirShield DHI-ARD912-W2(D)\u003c\/strong\u003e combines encrypted wireless communication, frequency hopping, adjustable leak detection sensitivity, battery-powered operation and flexible mounting options in a compact indoor water leak detector.\u003c\/p\u003e\n\u003cp\u003eFor Australian and New Zealand installations, purchasers and installers should confirm that the \u003cstrong\u003e433.1–434.6 MHz DHI-ARD912-W2(D) variant\u003c\/strong\u003e, 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.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003ch3\u003eWhat is the Dahua DHI-ARD912-W2(D) Wireless Water Leak Detector?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e is a wireless indoor detector designed to identify water leaks around pipes, baths, sinks, washing machines, dishwashers and other suitable water-sensitive areas.\u003c\/p\u003e\n\u003ch3\u003eWhat frequency does the DHI-ARD912-W2(D) operate on?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e operates within the \u003cstrong\u003e433.1 MHz–434.6 MHz\u003c\/strong\u003e carrier-frequency range.\u003c\/p\u003e\n\u003ch3\u003eWhat is the wireless range of the DHI-ARD912-W2(D)?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e has a manufacturer-specified wireless communication distance of \u003cstrong\u003eup to 800 metres (2,624.67 ft) in open space\u003c\/strong\u003e. Actual indoor range depends on environmental and installation conditions.\u003c\/p\u003e\n\u003ch3\u003eDoes the DHI-ARD912-W2(D) support two-way wireless communication?\u003c\/h3\u003e\n\u003cp\u003eYes. The \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e uses two-way wireless communication and also supports frequency hopping to improve communication stability.\u003c\/p\u003e\n\u003ch3\u003eDoes the DHI-ARD912-W2(D) use encrypted communication?\u003c\/h3\u003e\n\u003cp\u003eYes. Wireless communication on the \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e supports \u003cstrong\u003eAES128 encryption\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eDoes the DHI-ARD912-W2(D) support jamming detection?\u003c\/h3\u003e\n\u003cp\u003eYes. The \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e supports wireless jamming detection as part of its communication features.\u003c\/p\u003e\n\u003ch3\u003eCan the sensitivity of the DHI-ARD912-W2(D) be adjusted?\u003c\/h3\u003e\n\u003cp\u003eYes. The \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e supports adjustable water leak detection sensitivity.\u003c\/p\u003e\n\u003ch3\u003eWhat battery does the DHI-ARD912-W2(D) use?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e is powered by \u003cstrong\u003eone CR123A battery\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow long does the battery last in the DHI-ARD912-W2(D)?\u003c\/h3\u003e\n\u003cp\u003eDahua specifies approximately \u003cstrong\u003e3 years of battery life when the DHI-ARD912-W2(D) is triggered once per day\u003c\/strong\u003e. Actual battery life can vary according to operating and environmental conditions.\u003c\/p\u003e\n\u003ch3\u003eDoes the DHI-ARD912-W2(D) have low-battery detection?\u003c\/h3\u003e\n\u003cp\u003eYes. The \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e includes low-battery detection to indicate when battery attention is required.\u003c\/p\u003e\n\u003ch3\u003eCan the DHI-ARD912-W2(D) be wall mounted?\u003c\/h3\u003e\n\u003cp\u003eYes. Dahua specifies both \u003cstrong\u003eplane mounting and wall mounting\u003c\/strong\u003e for the \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs the DHI-ARD912-W2(D) waterproof?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e has an \u003cstrong\u003eIPX5 protection rating\u003c\/strong\u003e. It is specified as an indoor water leak detector and should be installed according to Dahua's installation instructions.\u003c\/p\u003e\n\u003ch3\u003eDoes the DHI-ARD912-W2(D) require wiring?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e uses wireless communication and battery power, so it does not require signal wiring for normal wireless operation.\u003c\/p\u003e\n\u003ch3\u003eDoes the DHI-ARD912-W2(D) support cloud firmware updates?\u003c\/h3\u003e\n\u003cp\u003eYes. The \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e supports cloud updates and is specified to automatically restore if a cloud update fails.\u003c\/p\u003e\n\u003ch3\u003eDoes the DHI-ARD912-W2(D) monitor temperature?\u003c\/h3\u003e\n\u003cp\u003eDahua states that the \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e can display the temperature of its surrounding environment and supports an overheating alarm.\u003c\/p\u003e\n\u003ch3\u003eWhat are the dimensions of the DHI-ARD912-W2(D)?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e measures \u003cstrong\u003e84.7 × 84.7 × 32.5 mm\u003c\/strong\u003e and has a specified net weight of \u003cstrong\u003e0.1 kg\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between DHI-ARD912-W2(D) and DHI-ARD912-W2?\u003c\/h3\u003e\n\u003cp\u003eAccording 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 \u003cstrong\u003eDHI-ARD912-W2(D)\u003c\/strong\u003e supports \u003cstrong\u003eplane mounting and wall mounting\u003c\/strong\u003e, whereas the standard DHI-ARD912-W2 specification lists plane mounting.\u003c\/p\u003e","brand":"DAHUA","offers":[{"title":"Default Title","offer_id":50885626331375,"sku":"DHI-ARD912-W2(D)","price":73.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/2838\/6287\/files\/DHI-ARD912-W2_D_4.png?v=1790223486","url":"https:\/\/cctvimporters.com.au\/zh\/products\/dahua-airshield-dhi-ard912-w2d-wireless-water-leak-detector-433-mhz-aes128-ipx5","provider":"CCTV Tradie","version":"1.0","type":"link"}