The Dahua DHI-ARD324-W2(S) is a smart wireless door and window sensor that detects open/close status, tilt, and vibration events in real time. Equipped with a temperature sensor and tamper protection, it helps secure entry points while monitoring indoor conditions.
Key Features
-
Open/Close Status Detection - Uses a magnetic reed switch to detect door or window movement instantly.
-
Shock & Tilt Detection - Built-in triaxial accelerometer identifies vibrations and angular changes, triggering alerts.
-
Temperature Monitoring - Measures indoor temperature from –15°C to +65°C with ±1°C accuracy, including overheat alerts.
-
Wireless with 1000m Range - Two-way RF433 communication with frequency hopping ensures stable long-distance performance.
-
Tamper Detection - Triggers alerts if the sensor is forcibly removed or opened.
-
Cloud Firmware Update - Supports remote firmware upgrades with automatic recovery if an update fails.
-
Multiple Input Modes - Supports normally open, normally closed, or pulse count modes—ideal for integrating external wired sensors.
-
Battery Life up to 3 Years - Long-lasting CR123A battery with low power draw for minimal maintenance.
Perfect For:
- Entry doors and windows in homes
- Retail back doors or stockroom access points
- Apartment balconies and sliding doors
- Office entrances or emergency exits
- Garage or shed doors
- Temperature-sensitive storage rooms
Install Tips
- Install on non-metal doors for best magnetic contact and wireless range.
- Keep the magnet aligned and within 40mm of the sensor body when the door is closed.
- Use tilt and shock alerts to monitor less-accessible windows or glass doors.
- Enable jamming detection via DMSS app for additional signal interference protection.
- Choose the right input type (NO/NC/Pulse) if connecting to a wired sensor.
- Avoid areas with excessive temperature fluctuation if relying on the temperature feature.
- Downloads
Quick-Read Specs Card
| Feature |
Details |
| Detection Type |
Open/Close, Tilt, Shock |
| Sensor |
Reed switch + triaxial accelerometer |
| Temperature Sensor |
Yes (±1°C accuracy, overheat alerts) |
| Wireless Range |
Up to 1000 m (open space) |
| Communication |
RF433, two-way with frequency hopping |
| Battery |
1 × CR123A (up to 3 years life) |
| Tamper Alarm |
Yes |
| Input Modes |
NO / NC / Pulse |
| Operating Temp |
–10°C to +55°C |
| Dimensions |
100.2 × 20.8 × 20.3 mm |
| Certifications |
CE |
| App Integration |
DMSS |
| Mount Type |
Bracket mount (non-metal doors) |
Extra Info
Multi-Sensor Security in One Compact Device
The DHI-ARD324-W2(S) is more than just a door sensor. In addition to detecting door or window open/close status, it can recognize shock (e.g., from forced entry) and tilt (e.g., for casement windows). This makes it especially useful in dynamic environments where basic magnetic sensors fall short.
Temperature Monitoring Built In
With a wide sensing range from –15°C to +65°C, the sensor reports indoor temperatures and can trigger overheat alerts if needed. This adds value in homes with pets, elderly residents, or storage areas requiring environmental control.
Encrypted, Reliable Wireless Communication
The sensor uses AES128 encryption over RF433, with frequency hopping and two-way communication. This ensures stable, interference-resistant performance in larger installations or busy environments.
Cloud Updates with Auto Recovery
Firmware updates are handled automatically via cloud and will roll back in case of failure, ensuring reliability without manual resets.
Custom Inputs for Integration
With three input types supported (NO, NC, Pulse), this model can also connect to external wired devices such as roller door switches or magnetic contacts on gates.
Q&A
Q: What types of events can this sensor detect?
A: It detects open/close status, shock (vibration), tilt, tampering, and temperature.
Q: Can it be used on metal doors?
A: It’s recommended for non-metal doors to ensure accurate magnetic detection and optimal wireless performance.
Q: How far can it communicate with the alarm hub?
A: Up to 1000 meters in open space using frequency-hopping RF433.
Q: How long will the battery last?
A: Up to 3 years if triggered twice a day in NO mode; 1.5 years in NC mode.
Q: What happens if someone tampers with the sensor?
A: The tamper alarm will activate and send an alert via the DMSS app.
Q: Is the temperature sensor always active?
A: Yes, and it supports overheating alerts as well.
Q: Can I connect it to another sensor?
A: Yes, it supports NO, NC, and pulse-count input types for wired sensor integration.
Q: Does it support firmware updates?
A: Yes, via cloud with automatic fallback recovery if an update fails.
