The ZKTeco KR503H is a high-performance HID 125kHz proximity card reader designed for secure access control in indoor and outdoor environments. Its single-gang wall-mount design allows for easy installation on standard electrical back boxes or flat surfaces, making it ideal for offices, commercial buildings, industrial facilities, and residential complexes.

Featuring an IP67-rated weatherproof enclosure and tamper-resistant epoxy-sealed electronics, the KR503H delivers reliable operation even in harsh environments. The reader supports HID 125kHz and ZKTeco 125kHz proximity cards and provides a Wiegand output interface for seamless integration with ZKTeco access control panels and most third-party controllers. Multi-color LED indicators and an audible buzzer provide clear user feedback for every authentication.

Key Features

• Supports HID 125kHz and ZKTeco 125kHz proximity cards
• Standard single-gang wall-mount design
• Wiegand output for easy integration with access control systems
• IP67-rated weatherproof enclosure
• Tamper-resistant epoxy-sealed electronics
• Multi-color LED status indicators (Red, Green, Amber)
• Built-in buzzer for audible operation feedback
• Read range of up to 7 inches (178 mm)
• Operating voltage: 5–16V DC
• Low power consumption
• Suitable for indoor and outdoor installations
• Compatible with ZKTeco C3, inBio, and most third-party Wiegand controllers.