At a glance
- Detection Range
- 12 m (39.37 ft) (90°)
- Sensor
- Dual-element low-noise PIR sensor, microwave sensor
- Battery Life
- 3 years
- Operating Temperature
- Indoor:, 10 °C to +55 °C
- Installation
- Wall mount
- Microwave Frequency
- 24 G
Model ARD2231-W2Dahua ARD2231-W2 Wireless Dual-Tech Motion Detector
₹6,673 Incl. GST
₹5,655 + 18% GST
At a glance
- Detection Range
- 12 m (39.37 ft) (90°)
- Sensor
- Dual-element low-noise PIR sensor, microwave sensor
- Battery Life
- 3 years
- Operating Temperature
- Indoor:, 10 °C to +55 °C
- Installation
- Wall mount
- Microwave Frequency
- 24 G
Motion detector for kitchens, server rooms and rooms with heaters or air conditioning, where a plain PIR could false alarm: both infrared and 24 GHz microwave must see movement. 12 m range, 18 kg pet immunity; for Dahua wireless alarms.
- WarrantyManufacturer warranty under Dahua's terms. Warranty claims
- DeliveryPrice, availability and delivery charges are confirmed in your quotation. Shipping and delivery
- InstallationWall mount
Overview
The Dahua ARD2231-W2 is a wireless dual-technology motion detector. It pairs a passive infrared (PIR) sensor with a 24 GHz microwave sensor and only raises an alarm when both see movement, which sharply reduces false alarms from heat sources. It is the better choice over a plain PIR in a kitchen, server room, warehouse or any room with air conditioners, heaters or a fireplace, where moving warm air can fool a single-technology sensor.
Is it right for you?
- It suits a room with heat sources or air movement, on a Dahua 433 MHz wireless alarm.
- It suits a home with pets up to 18 kg and under 50 cm tall.
- For an ordinary room without heat sources, the ARD1233-W2 PIR detector is the simpler model.
- Indoor use only, -10 to 55 °C (certified range -10 to 40 °C).
Key features
- PIR plus 24 GHz microwave detection: both must trigger before an alarm.
- 12 m range at 90° from a 2.2 m mounting height.
- Pet immunity up to 18 kg and below 50 cm height.
- Three sensitivity levels, two-way digital temperature compensation and white light resistance up to 2,000 lux.
- Up to 1,200 m open-space range on 433 MHz with frequency hopping and AES128 (Advanced Encryption Standard) encryption.
- Built-in temperature reading from -15 to 65 °C, accurate to within 1 °C.
- Tamper, low battery detection, test mode and cloud updates.
- One CR123A battery rated for about 3 years at 10 triggers a day; 104 x 60 x 50 mm, 106 g, wall mounted.
What else you need
A Dahua 433 MHz wireless hub such as the ARC3000H and one CR123A battery. Dahua lists the ARA33A bracket as an accessory for angled mounting.
Installation
An alarm installer can fit it, and a confident owner can manage a home. Mount it on a wall at 2.2 m facing across the room, pair it in the Dahua app, set the sensitivity and walk-test it in test mode.
Software and licences
Sensitivity, test mode and pairing are set in the Dahua app. Firmware updates arrive through the cloud.
Before you buy
- The microwave sensor draws more power than a PIR-only model, so a busy area shortens battery life.
- Battery life of about 3 years assumes 10 triggers a day.
- Indoor use only.
Technical specifications
Key facts
- What is it?
- Motion detectorBrand Dahua, model ARD2231-W2
- How is it powered?
- CR123A ×1
- Which documents are available?
- Datasheet (2), user manual, installation / drawing (3), quick start guide, safety / legal information, 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
- outdoor rating, box contents
RelatedSolutionIntrusion alarm systemsGuideWireless alarm system guideDocumentsAll Dahua documents
General
- Model
- ARD2231-W2
- Indicator Light
- 1 × green alarm indicator
- Button
- 1 × power switch
- Remote Update
- Cloud update
- Low Battery Detection
- Yes
- Measuring Accuracy
- ± 1 °C (± 1.8 °F)
- Sensor
- Dual-element low-noise PIR sensor, microwave sensor
- Detection Mode
- PIR + Microwave
- Sensitivity
- 3 levels adjustable
- Detection Range
- 12 m (39.37 ft) (90°) with installation height of 2.2 m (7.21 ft)
- Detection Speed
- 0.3 m/s, 3 m/s (0.98 ft/s, 9.84 ft/s)
- Microwave Frequency
- 24 G
- Pet Immunity Level
- ≤ 18 kg (39.68 lb), height＜ 50 cm (19.68 ft)
- White Light Resistance Level
- 2000 lux
- Test Mode
- Yes
- Operating Current
- 11 uA
- Alarm Current
- 69 mA
- Carrier Frequency
- 433.1 MHz to 434.6 MHz
- Transmitter Power (EIRP)
- Limit 10 mW
- Communication Mechanism
- Two-way
- Communication Distance
- Up to 1,200 m (3937.01 ft) in; an open space
- Encryption Mode
- AES128
- Frequency Hopping
- Yes
- Installation
- Wall mount
- Anti-corrosion Level
- Basic Protection *The products are designed for general use and are applicable even in areas with no specific requirements for anti-corrosion protection.
Input
- Power Supply
- CR123A ×1
- Battery Life
- 3 years(if triggered 10 times a day with a battery efficiency of 70%)
- Power Consumption
- ≤0.64W
Protection
- Tamper
- Yes
Environment
- Measuring Range (Temperature)
- , 15 °C to +65 °C (+5 °F to +149 °F) (indoor)
- Two-way Digital Temperature Compensation
- Yes
- Operating Temperature
- Indoor:, 10 °C to +55 °C (+14 °F to +131 °F); Certified temperature:, 10 °C to +40 °C (+14°F to +104 °F)
- Operating Humidity
- 0% to 90% (RH)
Physical
- Product Dimensions
- 104.0 mm × 60.0 mm × 50.0 mm (4.09" × 2.36" × 1.97") (L × W × H)
- Net Weight
- 106 g (0.23 lb)
- Gross Weight
- 184 g (0.41 lb)
- Casing Material
- PC + ABS
- Packaging Dimensions
- 135 mm × 98.5 mm × 56.8 mm (5.31" × 3.88" × 2.24") (L × W × H)
Approvals
- Certifications
- ● CE
- Warranty
- Manufacturer warranty under Dahua's terms. How claims work
Product attributes and shipping details
| Brand | Dahua |
|---|---|
| Radio Frequency | 433.1 MHz–434.6 MHz |
Downloads
Documentation
- Dahua ARD2231-W2 datasheetDatasheet · This model · 372.7 KBDownload
- DHI-ARD2231-W2 S0 datasheet 20260915 EnglishDatasheet · This model · materialfile.dahuasecurity.comDownload
- Dahua ARD2231-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
- Installation drawing: Dahua ARD2231-W2 Wireless Dual-Tech Motion DetectorInstallation / drawing · This model · materialfile.dahuasecurity.comDownload
- Installation drawing: Dahua ARD2231-W2 Wireless Dual-Tech Motion Detector (dimensions)Installation / drawing · This model · materialfile.dahuasecurity.comDownload
- Installation drawing: Dahua ARD2231-W2 Wireless Dual-Tech Motion Detector (application diagram)Installation / drawing · General · materialfile.dahuasecurity.comDownload
Series documents can differ from your exact model. Report a wrong or missing file
Questions about this product
Why choose it over a plain PIR?
Both the PIR and the 24 GHz microwave sensor must see movement before it alarms, so heaters, air conditioning and fireplaces are far less likely to cause false alarms.
Will it ignore my pet?
Yes, animals up to 18 kg and under 50 cm tall.
How long does the battery last?
About 3 years on one CR123A at 10 triggers a day. Busier areas shorten this.
How much of a room does it cover?
12 m at 90° when mounted at 2.2 m.
Can it be used outdoors?
No. It is rated for indoor use, -10 to 55 °C.
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