Completely wireless This is a 7 inch monitor plus doorbell There is no cables needed between monitor to your doorbell It connected to your smart phone When visitor presses doorbell It will ring inside house and display visitor on monitor You can speak to visitor and visitor can speak to you The main difference with this kit is Battery size Doorbell 7000mah Monitor 5000mah Most of the other kits online battery size is only 1000mah Plus they are not connected to your phone Kit comes with 1.  7 inch monitor 1  outdoor doorbell fully waterproof 1 charging cable/plug for charging kit 1. Screw driver Rawplugs Stick back Full English menu It recommended to keep monitor pluged in all the time It can be put on wall or sit on table/stand Distance from monitor to doorbell is 100 meters It one of the best intercom systems we have come across Simple to connect Don’t forget no cables needed from monitor to doorbell Completely wireless Plus full back up service if needed