DHI Magnetic Contact ARD323
DHI Magnetic Contact ARD323
ARD323-W2(868) is a wireless door and window detector from Dahua, intended to complement alarm systems built around Dahua's wireless hubs. The detector uses a reed switch sensor that detects when the door or window is opened, and is adapted for mounting on non-metallic doors and windows.
Thanks to two-way communication and frequency hopping, the detector communicates stably and interference-free with the hub, with a range of up to 1,200 meters in open areas. The unit is powered by a CR123A battery with a lifespan of up to 4 years (2 years with external input of type NC or pulse), and automatically warns of low battery level. Built-in temperature monitoring, signal strength indication, and tamper protection provide extra security and an overview of the system's status directly in the app.
The detector supports cloud-based remote updates with automatic recovery if an update fails, as well as a test mode for easy operational control during installation. With certification according to EN 50131 Grade 2, the ARD323-W2(868) is suitable for both private homes and professional installations.
Key features
- Reed switch sensor for door/window detection
- Signal strength indication
- Low battery warning
- Temperature monitoring (–15 °C to +65 °C)
- Frequency hopping and two-way communication for stable wireless connection
- Cloud update with automatic recovery on failed update
- Test mode for easy installation control
- Tamper protection
Technical specifications
| Feature | Value |
|---|---|
| Indicator light | 1 x green alarm indicator |
| Button | 1 x power switch |
| Remote update | Cloud update |
| Low battery warning | Yes |
| Tamper protection | Yes |
| Measurement range (temperature) | –15 °C to +65 °C (indoor) |
| Sensor | Reed switch |
| Trigger distance | < 40 mm |
| Test mode | Yes |
| Application area | Non-metallic doors |
| Carrier frequency | 868.0–868.6 MHz |
| Transmitter power (EIRP) | Max 25 mW |
| Communication | Two-way |
| Range | Up to 1,200 m in open area |
| Encryption | AES128 |
| Frequency hopping | Yes |
| Power supply | CR123A battery |
| Battery type/connection | Type C |
| Battery life | 4 years (external input type NO), 2 years (external input type NC or pulse) |
| Low battery level (threshold) | 2.7 V |
| Battery reset (threshold) | 2.8 V |
| Power consumption | Max 125 mW |
| Operating temperature | –10 °C to +55 °C (indoor) |
| Operating humidity | 10–90 % RH |
| Dimensions (L x W x H) | 100.2 × 20.8 × 20.3 mm |
| Net weight | 70 g |
| Gross weight | 115 g |
| Installation | Bracket mount |
| Housing material | PC + ABS |
| Certifications | CE, EN 50131-1:2006+A1:2009+A2:2017+A3:2020, EN 50131-6:2017, EN 50131-5-3:2017, EN 50131-2-6:2008, Security class Grade 2, Environmental class II |
| Corrosion protection | Basic Protection |
| Storage temperature | –10 °C to +55 °C |
| Storage humidity | 10–90 % RH |
| Packaging dimensions | 135.0 × 98.5 × 27.8 mm |