Dahua DHI-ARD2231-W2(868) - Wireless PIR & Microwave Dual-Tech Motion Detector
Product Features
- PIR + microwave dual-tech detection reduces false alarms from thermal interference
- Pet immunity for animals up to 18 kg and under 50 cm in height
- 868.0-868.6 MHz two-way wireless communication with AES128 encryption
- Detection range up to 12 m (90°) at 2.2 m installation height
- Communication distance up to 1,600 m in open space with frequency hopping
- Powered by one CR123A battery, up to 3 years battery life
Dahua ARD2231-W2(868) — Wireless PIR & Microwave Dual-Tech Motion Detector
The Dahua ARD2231-W2(868) is a wireless dual-technology motion detector that combines passive infrared (PIR) and microwave sensing to greatly reduce false detections caused by thermal interference. It includes a pet immunity function for animals up to 18 kg and under 50 cm in height, and uses frequency hopping with two-way communication for a stable wireless link.
Who is it for?
This detector is designed to work as part of a Dahua 868MHz wireless alarm system, reporting motion events back to a compatible wireless control panel or hub. It suits rooms and areas where a hardwired detector is not practical, and where pet-tolerant motion sensing is needed to avoid false alerts from animals moving through the space.
Key specification
| 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) |
| Sensitivity | 3 levels adjustable |
| Microwave Frequency | 24 G |
| Pet Immunity Level | ≤ 18 kg (39.68 lb), height < 50 cm (19.68 ft) |
| Carrier Frequency | 868.0 MHz–868.6 MHz |
| 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%) |
| Operating Temperature | Indoor: –10 °C to +55 °C (+14 °F to +131 °F) |
| Tamper | Yes |
What you will need
- A compatible Dahua wireless alarm hub/panel (868MHz) to receive and manage this detector's signals
- One CR123A battery to power the unit (not always included, check before installing)
Frequently asked questions
Does the ARD2231-W2(868) work with pets in the house?
Yes, it has a pet immunity function for animals up to 18 kg and under 50 cm in height.
What alarm panel does it need?
It requires a compatible Dahua 868MHz wireless alarm hub/panel to receive its signals; it does not work as a standalone device.
How far can it communicate with the panel?
Up to 1,600 m in an open space, using two-way communication with frequency hopping for a stable link.
How long does the battery last?
Around 3 years under typical use (triggered 10 times a day at 70% battery efficiency), powered by a single CR123A battery.
Browse the full Dahua range, explore our Intruder alarms category, or contact us on 01902 902251. You can also visit our Wolverhampton trade counter.
| Product Code | DHI-ARD2231-W2(868) |
|---|---|
| Type/Format | PIR/Pet |
| Manufacturer | Dahua |
| Colour | Brown |
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