The Dahua DHI-ARD822-W2 is a compact, wireless panic button designed to trigger instant alarms during emergencies like intrusions, fire, gas leaks, or medical incidents. With two-way RF communication, multi-color LED status indicators, and app-integrated battery status, it's built for peace of mind. Portable or wall-mounted, it's easy to deploy in homes or commercial environments where immediate alerting is vital.
Key Features
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Two-Way RF Communication – Ensures reliable, real-time alarm triggering and feedback.
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Multi-Color LED Indicators – Clear visual signals for pairing, operation, and communication.
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Cloud Firmware Updates – Future-proof with automatic recovery if updates fail.
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Accidental Press Protection – Reduces false alarms with built-in prevention features.
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App-Based Battery Monitoring – Check battery level remotely via mobile.
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Signal Strength Detection – Ensures optimal placement with real-time feedback.
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Long Battery Life – Up to 3 years of use (twice per week) on a single CR2032 cell.
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Weather Resistance (IP54) – Splash- and dust-resistant for varied indoor locations.
Perfect For:
- Mount within easy reach of the user, typically around 1.2m height.
- For medical use, place near bedsides, showers, or restrooms.
- Use included strap or bracket for portable or fixed setups.
- Confirm signal strength with the app during setup for optimal placement.
- Avoid installing directly on metal surfaces, which may interfere with RF signal.
- Replace battery every 3 years or sooner if used more frequently.
Install Tips
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Best Height: Mount at chest level (approx. 1.4m) for optimal usability.
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Test Signal First: Use signal strength detection before fixing to wall.
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Pairing Tip: Ensure it's within the hub's RF range before pairing.
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Power Advice: Use quality AA batteries for longer lifespan.
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Quick Access Setup: Program emergency buttons for fastest use cases like medical response.
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Avoid Metal Surfaces: Metal may block RF signals — install on plastic or wood surfaces if possible.
Downloads
Quick-Read Specs Card
| Feature |
Details |
| Button Count |
2 Physical Buttons |
| Communication |
Two-way RF (433.1–434.6 MHz) |
| Range |
Up to 800 m (in open space) |
| Battery |
CR2032 (up to 3 years) |
| Signal Strength Test |
Yes |
| Tamper Switch |
No |
| LED Indicators |
Multi-color for status display |
| Water/Dust Protection |
IP54 Rated |
| Mounting |
Wall mount or portable (strap/bracket option) |
| Certifications |
CE |
Extra Info
Multi-Scenario Emergency Support
The Dahua DHI-ARD822-W2 is designed to provide instant emergency notification in a wide range of critical situations. Whether it's a home intrusion, a fire outbreak, a gas leak, or a medical emergency, a single press of the button sends an immediate alert to both the central monitoring station and pre-designated contacts, such as family members or caregivers. This fast-response functionality makes it an essential safety device not just for home security, but also for healthcare environments, retail stores, schools, and offices—anywhere rapid emergency communication can save lives or property.
Accidental Press Prevention
To reduce the risk of false alarms, the ARD822-W2 features a thoughtfully engineered anti-accidental press mechanism. Unlike traditional panic buttons that can be easily triggered by mistake, this device incorporates press-and-hold activation or recessed button placement (depending on model), ensuring only deliberate actions result in an alarm. This is especially valuable in homes with children, busy workplaces, or pockets and bags, where unintended pressure on the device might otherwise cause unnecessary panic or dispatch.
Clear LED Status Feedback
User confidence is key during emergencies. That’s why the panic button includes a multi-color LED indicator, offering visual feedback for every key function. During pairing, signal testing, and alarm activation, the LED flashes in specific colors or patterns, giving users immediate confirmation that the device is properly connected and functioning. This ensures that even those unfamiliar with smart devices can use the panic button reliably and without hesitation in a high-stress situation.
Cloud Connectivity & Updates
Staying up to date is critical for security devices. The ARD822-W2 supports cloud-based firmware updates, allowing for automatic enhancements to security protocols, functionality, and performance—without requiring technical intervention. In the event that a firmware update fails, the panic button features an auto-recovery system, which restores the device to its last known good configuration. This guarantees that the device remains operational and ready to respond at all times, with zero maintenance downtime.
Q&A
Q: How far can the panic button transmit a signal?
Up to 800 meters in open space, making it highly effective for multi-room buildings.
Q: Will the battery need frequent changing?
No — it lasts up to 3 years if triggered twice per week.
Q: Does it work with Dahua alarm hubs only?
Yes, it’s designed for compatibility with Dahua's RF-based alarm hubs and systems.
Q: Can I carry it with me instead of mounting it?
Yes — options include mounting, wrist straps, or portable use.
Q: What happens if the firmware update fails?
The unit auto-recovers and reverts to the previous working version.
Q: Is the panic button waterproof?
It is IP54 rated, meaning it’s splash- and dust-resistant — ideal for indoor use but not full submersion.
Q: Can I check the battery level remotely?
Yes — the companion app displays real-time battery status.
Q: Does it support dual button press to avoid false alarms?
Yes, the accidental press prevention includes features like dual-action or longer press options depending on configuration.
