Grandstream GDS3702 HD audio IP Intercom

GDS3702 HD audio IP Intercom systme, HD audio options with up to 1.5m of audio input and 3m of audio output; Supports SIP calls to IP phones to facilitate communication; Built with a metal casing to make it weatherproof and vandal resistant; 2 Relay for Electric Lock and Alarm out, 2 Alarm In for Exit button and door sensor; Integrated PoE to power the device and provide a network connection; Built-in microphone and speaker offers voice options and intercom functionality.