Dahua- ARD912-W2(D)

Wireless Intrusion Alarms Model

DAHUA WIRELESS INTRUSION ALARM ARD912-W2(D)

FEATURES

Seamless Wireless Integration
Employs frequency hopping and two-way communication technology for stable and reliable communication with the hub.
Robust Security Protocols
Incorporates jamming detection and AES128 encryption to safeguard against unauthorized access and interference.
Automatic Firmware Updates
Supports cloud-based firmware updates with automatic restoration in case of update failures, ensuring continuous device performance.
Temperature Monitoring Functionality
Displays ambient temperature and includes an overheating alarm to monitor environmental conditions effectively.
Customizable Sensitivity Levels
Allows for sensitivity adjustments to accommodate various installation scenarios, enhancing detection precision.

SPECIFICATIONS

Sensor: Water leak detector
Power: 1 × CR123A (3 V) battery
Standby current: ≈28.5 µA; Alarm current: ≈5.8 mA
Wireless frequency: 433.1–434.6 MHz or 868.0–868.6 MHz (depending on region/version)
Communication: AES‑128 encryption, two-way, frequency hopping
Range: Up to 800 m (433 MHz), 1,200 m (868 MHz open air)
Operating temperature/humidity: –10 °C to +55 °C, 10–90% RH (indoor only)
Dimensions: 84.7 × 84.7 × 32.5 mm; weight: ≈0.1 kg net, 0.2 kg gross

DAHUA WIRELESS INTRUSION ALARM ARD912-W2

FEATURES

Reliable two-way, frequency-hopping wireless communication
Uses encrypted AES‑128 over either 433 MHz or 868 MHz bands, ensuring stable transmission even in interference-prone environments.
Jamming detection and secure cloud firmware update support
Notifies the system if RF interference is detected and supports remote OTA updates with automatic recovery on failure.
Ambient temperature display with overheating alarm
Reports the surrounding temperature and triggers alerts if thresholds are exceeded. Adjustable sensitivity and low power usage
User-configurable water leak sensitivity and ultra-low standby current (~28.5 µA) extend battery life.
Compact and weather-resistant form factor
IPX5-rated casing in PC+ABS material, mountable on walls or flat surfaces.

SPECIFICATIONS

Sensor type: water‑leak detector (with built‑in probe)
Wireless carrier frequency: 868.0 MHz – 868.6 MHz (for 868‑version)
Wireless communication mechanism: Two‑way RF, frequency hopping, AES‑128 encryption
Communication (open‑space) range: Up to ~1,200 m (for 868 MHz version)
Power supply: 1 × CR123A battery (3 V)
Standby power consumption: ~28.5 µA typical, Alarm current ~5.8 mA
Max power consumption: 144 mW
Operating temperature: –10 °C to +55 °C (indoor version)
Humidity range: 10%–90% RH (non‑condensing)
Protection rating: IPX5 (splash resistant)
Dimensions (W × H × D): 84.7 mm × 84.7 mm × 32.5 mm
Weight: ~0.1 kg net

DAHUA WIRELESS INTRUSION ALARM ARD1731-W2(868)

FEATURES

High-Resolution Image Capture
Equipped with a 2MP CMOS sensor, the ARD1731-W2(868) captures high-resolution snapshots up to 1600 × 1200 pixels upon detecting motion. This ensures clear visual evidence of intrusions.
Enhanced Motion Detection
The device utilizes PIR motion detection technology to accurately detect human movement within its designated area. This triggers image capture and alarm notifications, enhancing security measures.
Wireless Connectivity
Operating on the 868 MHz frequency, it ensures stable and secure communication with the central hub. This wireless setup simplifies installation and reduces the need for extensive wiring.
Temperature Monitoring
The detector displays the surrounding temperature and supports overheating alarms. This feature allows for proactive monitoring of environmental conditions.
Adjustable Sensitivity
Offers 3-level sensitivity adjustment, allowing customization based on specific requirements. This flexibility enhances detection accuracy.

SPECIFICATIONS