Dahua Technology DHI-ASR1100B-V1 RFID reader RS-485/Wiegand Black

Dahua Technology DHI-ASR1100B-V1 RFID reader RS-485/Wiegand Black is an access control card reader designed to interface with standard access controllers. The reader supports MIFARE 13.56 MHz cards and transmits card data via Wiegand or RS-485 protocols. Its compact surface-mounted housing (72 mm wide, 102 mm deep, 18 mm high) and IP67-rated enclosure make it suitable for indoor and outdoor installation where durable, tamper-aware card reading is required.

Advantages

The reader provides flexible communication options through both Wiegand and RS-485 interfaces, enabling integration with a wide range of access control systems. IP67 ingress protection and a waterproof design allow reliable operation in harsh weather conditions. Built-in tamper detection (Watch Dog) enhances physical security by alerting the controller in case of interference, while red and green indicator LEDs offer immediate visual status feedback for users. The surface-mounted form factor simplifies installation on walls or panels.

Suitable for

• Access control for office and commercial entrances
• Outdoor gate and perimeter access points
• Apartment and residential building entry systems
• Integration with security and time-attendance systems

Key specifications

• Supported card type: MIFARE 13.56 MHz
• Interfaces: Wiegand and RS-485
• Ingress protection: IP67 (waterproof)
• Indicator lights: Red and green LEDs
• Tamper detection: Watch Dog function
• Mounting: Surface-mounted installation
• Dimensions (W×D×H): 72 mm × 102 mm × 18 mm
• Color: Black

How to use

Mount the reader on a suitable flat surface using the surface-mounted design guidelines and ensure correct orientation and sealing for outdoor installations. Connect the device to the access controller using the chosen interface (Wiegand or RS-485) and follow the controller manufacturer’s wiring and configuration instructions. Present a compatible MIFARE 13.56 MHz card to the reader to transmit card data to the controller for verification. Configure indicator LED behavior and tamper monitoring from the access control system as required.

Usage recommendations

For reliable long-term performance, install the reader in a location protected from direct mechanical impact, verify IP67 sealing after mounting, and use recommended cable types for RS-485 or Wiegand runs. Regularly test tamper detection and LED feedback during system commissioning and perform periodic inspections in exposed outdoor environments.