Grandstream SIP Doorphone intercom with RF card reader

The Grandstream GDS3705 is an IP-based audio door entry system designed for secure, audio-only access control and monitoring across various locations.
Key Features:

Dual microphones and an HD loudspeaker with advanced Acoustic Echo Cancellation (AEC) for clear communication
Built-in RFID chip reader and keypad for secure keyless entry
Zinc alloy metal casing with IP66 weatherproof and IK09 vandal-resistant ratings
SIP-based system compatible with IP phones and Grandstream’s free Device Management System (GDMS)
Alarm-in and alarm-out support for integration with existing security systems
Power over Ethernet (PoE) for simplified installation