The Dahua DHI-ASI3204E (also known as ASI3204E-W in some variants) is a compact, multi-functional single-door access control terminal from Dahua Technology, engineered for seamless integration of face recognition, time attendance, and secure entry management. Ideal for small to medium-sized businesses, offices, residential buildings, and high-traffic areas, it provides contactless authentication to minimize health risks while enhancing operational efficiency. This device combines advanced AI-driven biometrics with versatile connectivity, ensuring reliable performance in diverse environments, including indoor and limited outdoor settings.

Core Functionality

At its heart, the DHI-ASI3204E leverages Dahua’s deep learning algorithms for face recognition as the primary authentication method. It captures and processes facial data in under 0.2 seconds with a claimed accuracy rate of ≥99.9%, even in challenging conditions like low light or partial obstructions. The system supports a recognition range of 0.3–1.5 meters and accommodates users between 1.2–2.0 meters in height, making it user-friendly for most adults. To bolster security, it includes anti-spoofing measures against photos, videos, or masks, using liveness detection via infrared (IR) illumination.

Beyond facial biometrics, the terminal offers multi-mode verification for added flexibility:

• Fingerprint scanning: Optical sensor for up to 3,000 fingerprints.
• IC/Mifare card reading: Compatible with 13.56 MHz cards for quick swipe access.
• Password entry: Numeric keypad for PIN-based unlocking.
• Combination modes: Face + fingerprint, card + password, etc., to meet varying security policies.

It also features scheduled unlocking and doorbell integration, allowing timed access for cleaning staff or visitors, and one-touch calling for remote door opening via connected apps.

Hardware and Design

• Display and Interface: A vibrant 2.4-inch LCD touchscreen (320×240 resolution) displays user prompts, attendance records, and status messages in real-time. The intuitive UI supports multilingual operation, including English, Chinese, and others.
• Imaging System: Equipped with a 2-MP CMOS dual-lens camera featuring wide-angle FOV (up to 84° horizontal), digital wide dynamic range (DWDR), and built-in white LED/IR supplements for clear imaging day or night.
• Build Quality: Sleek, tamper-proof metal/plastic enclosure measures approximately 185 mm (H) × 76 mm (W) × 21 mm (D), weighing under 0.5 kg. It carries an IP65 rating for dust and water resistance in weatherproof models, with operating temperatures from -10°C to +50°C.
• Power Supply: Powered by DC 12V/2A, with low consumption (≤3W standby) for energy efficiency.

Capacity and Data Management

Designed for scalability, the device stores:

• Up to 1,000 face templates, users, or passwords.
• 3,000 fingerprints or cards.
• 50 administrator accounts.
• 100,000 event logs for audit trails.

Attendance data is automatically logged with timestamps, supporting export for payroll and HR systems. Events like access grants/denials trigger real-time alerts via email, SMS, or push notifications.

Connectivity and Integration

• Network Options: Dual-band Wi-Fi (2.4 GHz), 10/100 Mbps Ethernet (RJ-45), and RS-485 for legacy systems.
• Expansion Ports: Wiegand (26/34-bit) for third-party readers, USB 2.0 for data transfer/updates, and GPIO for alarms/locks.
• Software Ecosystem: Fully compatible with Dahua’s SmartPSS (Professional Surveillance Platform) for centralized management, remote configuration, and video linkage. It integrates with broader Dahua ecosystems like DMSS mobile app for on-the-go monitoring.