Dahua- ARD912-W2

Wireless Intrusion Alarms Model

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 probe
Power supply: 1 × CR123A (3 V)
Standby current: ~28.5 µA
Alarm current: ~5.8 mA
Max power consumption: ~144 mW
Wireless carrier frequency: 433.1‑434.6 MHz (for “D” version) or 868.0‑868.6 MHz (for other version) depending model variant.
Wireless communication distance (free space): Up to approx. 800 m (433 MHz variant) or up to approx. 1,200 m (868 MHz variant)
Encryption: AES‑128, two‑way RF with frequency hopping
Operating temperature: ‑10 °C to +55 °C
Operating humidity: 10%–90% RH (non‑condensing)
Protection rating: IPX5 (splash resistant)
Dimensions: 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 image sensor, this device captures high-resolution snapshots (1600 × 1200) upon detecting motion. This ensures clear visual evidence for security monitoring.
Advanced Motion Detection
Utilizes PIR technology to accurately detect human movement within a 12-meter range. This enhances the reliability of the alarm system.
Wireless Communication
Operates on the 868 MHz frequency, providing stable and secure wireless communication. This minimizes interference and ensures reliable performance.
Temperature Monitoring
Features built-in temperature monitoring capabilities. This allows for environmental condition assessments.
Cloud-Based Firmware Updates
Supports cloud updates and can automatically recover from update failures. This ensures the device remains up-to-date with the latest features and security patches.

SPECIFICATIONS

DAHUA WIRELESS INTRUSION ALARM ARD323-W2(S)

FEATURES

Compact Design
This detector features a slim profile, making it suitable for discreet installations on doors or windows. Its compact size ensures it blends seamlessly with various environments.
Signal Strength Detection
Monitors the strength of the wireless signal to ensure reliable communication with the alarm system. This feature helps in identifying potential connectivity issues.
Temperature Monitoring
Equipped with temperature sensors to monitor the internal environment. This allows for early detection of unusual temperature changes.
Low Battery Alarm
Notifies users when the battery level is low, prompting timely replacements. This ensures continuous operation of the detector.
Frequency Hopping Technology
Utilizes frequency hopping and two-way communication to enhance signal stability and reduce interference. This ensures consistent performance in various environments.

SPECIFICATIONS

Sensor: Reed switch
Movement/distance for magnet separation: < 40 mm
Wireless carrier frequency: 433.1 MHz–434.6 MHz (for “S” variant)
Wireless carrier frequency (868 variant): 868.0 MHz–868.6 MHz
Wireless transmission range: up to ~1,200 m open‑space
Encryption mode: AES‑128
Power supply: 1 × CR123A battery
Battery life: Approximately 4 years (NO external input type) or 2 years (NC or pulse input type)
Operating temperature: –10 °C to +55 °C (indoor version)
Operating humidity: 10%–90% RH (non‑condensing)
Dimensions: 100.2 mm × 20.8 mm × 20.3 mm
Power consumption: Max. ~70 mW (varies by region)