Dahua DHI-ARD2231-W2 - Wireless PIR & Microwave Dual-Tech Detector with Pet Immunity
Product Features
- PIR + microwave dual-tech detection reduces false alarms caused by thermal interference
- Pet immunity for animals up to 18 kg (39.68 lb) and under 50 cm in height
- 12 m detection range (90°) with 3 adjustable sensitivity levels
- Two-way wireless communication with AES128 encryption and frequency hopping, up to 1,200 m range
- Runs on a single CR123A battery for up to 3 years
- Tamper and low battery detection built in
Dahua DHI-ARD2231-W2 — Wireless PIR & Microwave Dual-Tech Detector with Pet Immunity
The Dahua DHI-ARD2231-W2 is a wireless dual-tech motion detector that combines passive infrared (PIR) and microwave detection technologies to greatly reduce false detections caused by thermal interference. It includes a pet immunity function for animals up to 18 kg (39.68 lb) and under 50 cm in height, making it suitable for homes with cats and small-to-medium dogs.
Who is it for?
This detector is designed for indoor rooms and hallways within a Dahua wireless intruder alarm system, where it monitors for movement and sends an encrypted two-way alarm signal back to the control panel. It suits households or premises that want reliable motion detection without false alarms triggered by pets or heating changes.
Key specification
| Detection Mode | PIR + Microwave |
|---|---|
| Sensor | Dual-element low-noise PIR sensor, microwave sensor |
| Sensitivity | 3 levels adjustable |
| Detection Range | 12 m (39.37 ft) (90°) at 2.2 m installation height |
| Pet Immunity | ≤18 kg (39.68 lb), height < 50 cm (19.68 in) |
| Microwave Frequency | 24 GHz |
| Carrier Frequency | 433.1 MHz–434.6 MHz |
| Communication | Two-way, AES128 encrypted, frequency hopping, up to 1,200 m in open space |
| Power Supply | CR123A ×1 |
| Battery Life | Up to 3 years (10 triggers/day at 70% efficiency) |
| Operating Temperature | Indoor: –10°C to +55°C |
| Dimensions | 104.0 mm × 60.0 mm × 50.0 mm |
What you will need
- A compatible Dahua wireless alarm hub/panel to receive the detector's signal — this device does not work standalone
- One CR123A battery to power the detector
Frequently asked questions
Does the DHI-ARD2231-W2 ignore pets?
Yes. Its pet immunity function is rated for animals up to 18 kg (39.68 lb) and under 50 cm in height, so cats and most small-to-medium dogs won't set off a false alarm.
What alarm panel does it need?
It needs a compatible Dahua wireless alarm hub/panel to receive its 433.1–434.6 MHz, AES128-encrypted, two-way signal.
How long does the battery last?
It runs on a single CR123A battery, rated for up to 3 years based on 10 triggers a day at 70% battery efficiency.
Can it be installed outdoors?
No — per the spec, its operating temperature range is rated for indoor use only (–10°C to +55°C).
Browse the full Dahua range, more Intruder alarms, or Contact us on 01902 902251 to speak to the team at our Wolverhampton trade counter.
| Product Code | DHI-ARD2231-W2 |
|---|---|
| Type/Format | PIR/Pet |
| Manufacturer | Dahua |
| Colour | Brown |
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