Access control reader DAHUA ASR2201A-D, black — 12 V DC, 1.7 W typical, 135×40×15 mm

DAHUA ASR2201A-D is a basic access control reader designed for card and password entry. It connects to an access controller to verify credentials and supports both indoor and outdoor installation thanks to a tempered glass panel, PC material housing and IP66 rating. The reader is compact and slim, enabling discreet wall mounting in offices, industrial zones, schools, residential areas and other controlled-entry locations.

Advantages

The reader supports contactless ID card recognition and password unlock, with RS-485 and Wiegand communication options for integration with common access control systems. It includes buzzer and indicator prompts, anti-tampering alarm and built-in watchdog for automatic recovery from abnormal states. The device features overcurrent and overvoltage protection on connection ports and low typical power consumption for reliable, long-term operation.

Suitable for

• Office entrances and reception areas
• Small business and retail access control
• Residential building entry systems
• Schools and campus buildings
• Industrial sites and factory doors

Key specifications

• Power supply: 12 V DC
• Typical power consumption: 1.7 W
• Maximum DC current: 0.5 A
• Dimensions: 135 × 40 × 15 mm
• Ingress protection: IP66 (suitable for outdoor use)
• Materials: PC housing with tempered glass panel
• Communication protocols: RS-485 and Wiegand
• Authentication methods: contactless ID card and password

How to use

Mount the reader on a flat wall surface at an appropriate height for users and connect it to the access controller using the supported RS-485 or Wiegand interface. Provide a stable 12 V DC power supply and verify wiring for overcurrent/overvoltage protection as required. Configure the access controller to recognize the reader and enroll cards and passwords according to the controller's management interface. Test buzzer, indicator prompts and anti-tamper alarm after installation to ensure proper operation.

Recommendations

Install the reader under a small protective cover or canopy if exposed to direct weather extremes despite its IP66 rating, and perform periodic checks of connections and the tamper circuit to maintain reliable operation.