Box set includes all you need for an app capable video intercom system Answer and open your door from the on-site master or your mobile device. Connect up to 8 smartphones or tablets per system. On-site monitor ensures calls get answered or recorded. Store calls with no added fees using onboard memory. Adding a MicroSD card to the on-site monitor increase call storage. Watch recorded calls from the on-site master or on the mobile app. Large 7” touchscreen provides crisp, clear detail of your caller. The vandal resistant surface mount video door intercom faceplate is crafted using die-cast zinc. Video door intercom automatical activates white LED lights to see clearly at night. Replace standard doorbells to add the security of seeing and speaking with visitors.