Dahua Wireless Door Detector DHI-ARD333-W2(868S)

Dahua Wireless Door Detector DHI-ARD333-W2(868S) The Dahua DHI-ARD333-W2(868S) is a wireless door detector designed for Dahua wireless alarm systems. Using a reed switch to monitor the opening and closing of non-metal doors, it combines long-range 868MHz two-way wireless communication with AES128 encryption, frequency hopping, tamper protection and low-battery monitoring. An external digital input also allows an additional wired detector to be integrated into the alarm system. Key Features Reed-switch wireless door detector designed for monitoring non-metal doors. 868.0–868.6MHz two-way wireless communication with a range of up to 1,400m in open space. AES128 encryption and frequency hopping help provide secure and stable wireless communication. 1-channel external digital input allows connection of an additional wired detector. Supports tamper detection, low-battery detection, signal-strength detection and temperature monitoring. Cloud updates enable remote firmware maintenance. Single CR123A battery provides an estimated service life of up to 4.6 years under Dahua's specified test conditions. Technical Specifications Specification Details Brand Dahua Model ARD333-W2(868S) Manufacturer Part Number DHI-ARD333-W2(868S) Product Type Wireless Door Detector Sensor Reed Switch Application Non-Metal Doors Movement Distance <40mm Alarm Input 1-Channel External Digital Input Indicator 1 × Green Alarm Indicator Button 1 × Power Button Tamper Detection Yes Low Battery Detection Yes Temperature Monitoring Yes Temperature Measurement Range -15°C to +65°C (Indoor) Anti-EMI/RFI Interference Yes Test Mode Yes Remote Update Cloud Update Wireless Frequency 868.0–868.6MHz Transmitter Power Up to 25mW EIRP Communication Two-Way Wireless Communication Distance Up to 1,400m in Open Space Encryption AES128 Frequency Hopping Yes Power Supply 1 × CR123A Battery Estimated Battery Life Up to 4.6 Years (2 Alarm Triggers per Day, 80% Battery Efficiency) Low Battery Threshold 2.2V Battery Restore Threshold 2.6V Maximum Power Consumption 0.258W Standby Power Consumption 0.087mW Operating Temperature -10°C to +55°C (Indoor) Operating Humidity 10%–90% RH Installation Wall Mount Casing Material PC + ABS Dimensions (L × W × H) 101 × 21 × 22.2mm Net Weight 48.7g Certification CE Add reliable door monitoring to a compatible Dahua wireless alarm system with secure two-way 868MHz communication and long battery life.