ANJIELOSMART 87IP small high-rise video intercom set room number

To set the room number for the 87IP two-family low-rise video intercom, first restore the door machine and the display to factory settings, and then set the room number. If it is a 4-digit number, set the bottom button to 0002room01Ext and the top button to 0003room01Ext. If it is a 2-digit number, set the bottom button to 02room01Ext and the top button to 03room01Ext.