Equipped with 485 communication interface, support broadcast control host control; 2 telephone interface input, 2 audio signal output, 1 short circuit signal output; power switch and matrix partition control switch for selection; built-in password entry The jumper switch function is convenient for users to choose; connect to the host through the local phone, you can remotely control the power of the system to turn on, zone paging and turn off the system; the call is automatically transferred to turn on the system, voice prompt operation, with zone and zone call control , Two-way conversation; the panel is equipped with connection level indication and manual hook button; 2U standard chassis design, aluminum alloy panel, beautiful and practical. Cabinet size 485 * 88 * 340mm, power consumption is 15W