ZKTECO 4.3 Inch Indoor Video Door Phone System VDPI-A1

• 4.3 inch digital LCD panel indoor monitor
• Super-thin design in hand free style
• Text OSD menu
• operate by touch sensor buttons
• adjustable colour/brightness/ contrast/ volume/ Display mode.
• Intercom call/ Broadcast function/ Monitor listening
• 1 Indoor station maximally supports 2 outdoor station and 1 slave indoor station
• Real-time monitoring to door station                                                                •12 ringtones for free switch