Dahua DHI-ARD2231-W2(868)-B-Black - Wireless PIR Detector
Product Features
- Dahua DHI-ARD2231-W2(868)-B-Black wireless alarm motion detector using passive infrared (PIR) and microwave dual-tech sensing.
- 12 m range at 90 degrees, 3 sensitivity levels, and pet immunity up to 18 kg under 50 cm.
- 868MHz two-way wireless with AES128 and frequency hopping, up to 1,600 m in open space.
- Battery powered: one CR123A battery rated for 3 years at 10 triggers a day, indoor wall mount.
Dahua DHI-ARD2231-W2(868)-B-Black — Wireless PIR Detector
The Dahua DHI-ARD2231-W2(868)-B-Black is the black version of Dahua's DHI-ARD2231-W2(868) wireless dual-tech detector, an indoor wireless passive infrared detector (PIR) and alarm motion detector that adds microwave sensing. Using passive infrared and microwave detection together, it detects the movement of people and greatly reduces false detections caused by thermal interference. It has pet immunity up to 18 kg, a 12 m detection range, and two-way 868MHz communication with frequency hopping.
Also listed as ARD2231-W2(868)-B-Black.
Key features
- PIR and microwave motion detection (dual-element low-noise PIR sensor plus a microwave sensor, 24 G).
- 12 m detection range at 90° from a 2.2 m installation height, with 3 adjustable sensitivity levels.
- Pet immunity up to 18 kg (39.68 lb), height under 50 cm.
- Two-way digital temperature compensation; displays the temperature of the surrounding environment and supports the overheating alarm.
- 868MHz two-way communication with AES128 encryption and frequency hopping, up to 1,600 m in an open space.
- RF interference detection, cloud update and automatic restore if an update fails.
- Battery powered motion detector: one CR123A battery, rated for 3 years at 10 triggers a day; wall mount, indoor use.
Technical specification
| Model | DHI-ARD2231-W2(868)-B-Black (Dahua datasheet model: DHI-ARD2231-W2(868), Wireless Dual-Tech Detector) |
|---|---|
| Product type | Wireless dual-tech detector (indoor) |
| Detection mode | PIR + Microwave |
| Sensor | Dual-element low-noise PIR sensor, microwave sensor |
| 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) |
| Sensitivity | 3 levels adjustable |
| Microwave frequency | 24 G |
| Pet immunity level | ≤ 18 kg (39.68 lb), height under 50 cm (19.68 in) |
| White light resistance level | 2000 lux |
| Two-way digital temperature compensation | Yes |
| Temperature measuring range | -15 °C to +65 °C (+5 °F to +149 °F) (indoor), accuracy ± 1 °C (± 1.8 °F) |
| Carrier frequency | 868.0 MHz-868.6 MHz |
| Transmitter power (EIRP) | Limit 25 mW |
| Communication mechanism | Two-way |
| Communication distance | Up to 1,600 m (5,249.34 ft) in an open space |
| Encryption mode | AES128 |
| Frequency hopping | Yes |
| Power supply | CR123A × 1 |
| Battery life | 3 years (if triggered 10 times a day with a battery efficiency of 70%) |
| Low battery detection / tamper | Yes / Yes |
| Operating temperature | Indoor: -10 °C to +55 °C (+14 °F to +131 °F); certified temperature: -10 °C to +40 °C |
| Dimensions | 104.0 mm × 60.0 mm × 50.0 mm (L × W × H) |
| Net weight | 106 g (0.23 lb) |
| Installation / casing | Wall mount / PC + ABS |
Works with
This detector needs a compatible Dahua 868MHz wireless alarm hub. Dahua lists the DHI-ARA33A detector bracket as an optional accessory. Related products we stock:
- Dahua DHI-ARA33A AirShield detector bracket (optional accessory)
- Dahua DHI-ARD2231-W2(868) wireless dual-tech detector
- Dahua DHI-ARC3800H-FW2(868) 4G wireless alarm hub
- Dahua DHI-ART-ARC3000H-03-GW2(868) AirShield wireless security alarm kit
- Dahua DHI-ARA12-W2(868) wireless indoor siren
Common questions
What frequency does it use?
868.0 MHz-868.6 MHz, with two-way communication, AES128 encryption and frequency hopping.
Will pets set it off?
It has a pet immunity function for animals up to 18 kg and under 50 cm in height.
How long does the battery last?
Dahua rates the single CR123A battery at 3 years if the detector is triggered 10 times a day, at 70% battery efficiency.
Can it be used outdoors?
No. Dahua describes it as an indoor detector with an indoor operating range of -10 °C to +55 °C.
Does it measure temperature?
Yes. Dahua lists a temperature measuring range of -15 °C to +65 °C (indoor) with ± 1 °C accuracy, and says the detector displays the temperature of the surrounding environment and supports the overheating alarm.
Is a mounting bracket available?
Dahua lists the DHI-ARA33A detector bracket as an optional accessory, for wall or ceiling mounting.
What does the Black version mean?
Black is the colour of this version as we list it. Dahua's datasheet covers the DHI-ARD2231-W2(868) model and does not describe colour versions, so the specification here is Dahua's for that model.
Browse the full Dahua range or contact us on 01902 902251.
Supplied by Zenith Security Co, Wolverhampton. We deliver to England, Scotland and Wales, or you can collect from our Wolverhampton trade counter (please call first).
Browse the range: Dahua AirShield alarms · Dahua cameras.
| Product Code | DHI-ARD2231-W2(868)-B-Black |
|---|---|
| Brand | Dahua |
| Device Type | PIR/Pet |
| Product Type | Intruder & Smoke Alarm |
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