Fanvil i12 is an SIP intercom with a Broadcom chipset and a rugged aluminum casing, waterproof and dustproof. Features: IP65 waterproof and dustproof Optional for one button or dual buttons Support online management and upgrade Embedded 2 short-in detect ports and 2 short-out control ports IK10 anti-collision with robust die-cast aluminum frame Support external active speaker output post for HD quality broadcasting Standard SIP Protocol, compatible with major popular IP PBX/IMS platforms HD voice speech quality with built-in 3W speaker and Acoustic Echo Canceller (AEC) Package Contents: i12 intercom Connector Installation diagram Quick installation guide Installation size map Screw and tool CD NEW IN THE BOX