Further information for Grandstream GDS3705
Features HD audio options with up to 1.5m audio input and 3m audio output Built-in RFID chip reader for keyless entry Supports SIP calls to IP phones to facilitate communication Metal housing makes the device weatherproof and vandal-proof Integrated PoE to power the Device and to provide a network connection Built-in dual microphone and HD speakers with advanced AEC provides intercom functionality