The Q3 QR Code Reader is a specialized access control device designed for easy integration with security systems. It features a flush mount design and operates using a 12V DC power supply. The reader connects via the Wiegand protocol and can be paired with a keypad to enable two-factor authentication (2FA) using a PIN and QR code for enhanced security【38†source】.

Key specifications include:
– **Power Consumption**: 12V DC, with a maximum of 800mA.
– **Reading Distance**: Can read QR codes at distances up to 20 cm.
– **Operating Temperature**: Functions effectively in temperatures ranging from -20°C to 70°C.
– **Indicators**: Equipped with LED indicators—red for power on and green for successful QR code reading, along with a buzzer for audio feedback【39†source】【40†source】.

This QR code reader is particularly useful for visitor management, enabling temporary credentials that can be generated and shared via email or printed. This feature streamlines access control for environments like storage locations or events【38†source】.