Dahua · DHI-ASR2100A-D
The device in the image is a Dahua DHI-ASR2100A-D (or a similar model from the ASR2100A series), a waterproof proximity card reader designed for both indoor and outdoor access control systems. Series Overview This series of readers features a thin, elegant design suitable for a variety of environments, including office buildings, schools, industrial zones, and residential areas. It acts as a key component of an access control system by reading card information and sending it to a controller for verification. Key Features Weatherproof & Durable: Constructed with a high-quality polycarbonate (PC) body and an acrylic panel. It has an IP66 rating, making it dustproof and waterproof for outdoor use. Dual Communication: Supports both RS-485 and Wiegand 34 communication protocols for flexible integration with various access controllers. Built-in Protection: Features overcurrent and overvoltage protection for all connection ports, along with a built-in watchdog to detect and recover from abnormal operation. Security Alarms: Includes an anti-tampering alarm to alert security if the device is