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The Dahua ARD821-W2 is a compact wireless panic button designed for Dahua alarm systems, allowing users to send an instant emergency alert when pressed. It is ideal for homes, offices, shops, and reception areas where quick alarm activation is important.
The device uses two-way RF communication to ensure reliable signal transmission and confirmation from the alarm hub. It features LED indicators for status and battery alerts, plus protection against accidental presses to reduce false alarms. Its small, portable design allows it to be carried or wall-mounted for easy access.
With secure encrypted wireless communication, long transmission range, and long battery life, the ARD821-W2 provides a simple and dependable way to trigger emergency alarms within a Dahua wireless security system.
Dual-Frequency Glass Detection: Detects high- and low-frequency glass break sounds for accurate alerts.
Wireless Two-Way Communication: Secure AES128 encryption with frequency hopping for stable signal transmission.
Detection Range: Up to 9 m (29.5 ft) for indoor glass surfaces.
Alarm Inputs: Two channels (NO/NC) for external wired sensors.
Power Supply: CR123A battery (up to 3-year life).
LED Indicator: Visual confirmation of alarm or fault status.
Operating Temperature: –10 °C to +55 °C.
Indoor Installation: Compact, surface-mount design.
Certifications: CE compliant for safety and reliability.
Integration: Works with Dahua wireless alarm systems for smart security management.
The Dahua ARD1233-W2 is a wireless passive infrared (PIR) motion detector designed for Dahua alarm systems. It provides reliable indoor motion detection using advanced PIR sensing, digital processing, and RF communication with Dahua wireless alarm hubs.
The detector supports pet immunity, reducing false alarms caused by small animals, and features two-way wireless communication for status supervision and configuration. Its low-power design ensures long battery life, making it suitable for residential, office, and small commercial security installations.
It integrates seamlessly with Dahua wireless intrusion alarm panels and can be installed quickly without running cables. The device monitors tamper, battery status, and signal strength to ensure stable operation in professional security deployments. Specifications:
Wireless PIR motion detector
Two-way RF communication with Dahua alarm hub
Pet immunity (small animals)
Indoor motion detection
Tamper protection
Low battery monitoring
LED indicator
Long battery life
Easy wall installation
Compatible with Dahua wireless alarm systems
Advanced smoke detection: Split‑spectrum photoelectric sensor for rapid and accurate detection with fewer false alarms.
Powerful alarm: Loud audible output ≥ 85 dB at 3 m and visual LED indicators.
Long battery life: Up to 3 years on a replaceable CR123A battery.
Wireless operation: Two‑way communication with frequency hopping and AES‑128 encryption, up to ~1000 m (open space).
Easy use: Single button for test and silence functionality.
Installation: Surface/ceiling mount with compact design.
Certifications: Complies with EN 14604 and has TÜV/CE safety listings.
Loud 110 dB sound alarm with flashing LED lights
IP65 rated – suitable for outdoor use
Wireless 868 MHz communication with frequency hopping
Multiple alarm sounds: intrusion, fire, medical, panic & more
Tamper protection and low-battery detection
Up to 3.4 years battery life
Supports cloud firmware updates
Supports 150 wireless peripherals (6 sirens, 64 keyfobs, and more)
Peripherals status display: signal strength, battery level, temperature, program version
Network options: Wired, Wi-Fi, 4G, 3G, GPRS
Dual SIM, single standby for uninterrupted connectivity
Automatic Network Replenishment (ANR) ensures continuous connection
Video linkage via mobile app (DMSS or COS Pro)Two-way wireless communication with frequency hopping for stability
Cloud updates with automatic recovery in case of failures
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