The Wireless Video Door Phone Intercom System -B108 will connect to your smartphone and by using this amazing wireless video doorbell system, you not miss any visitor calls. You can open the automated gates/doors, from everywhere. The wireless video intercom system supports an RFID card and password to unlock function and the outdoor station with 2.0MP high resolution. The frequency of this wireless video intercom system is 800Mhz or 900Mhz, with a 1 km range! The indoor monitor is a 7-inch touch screen and supports a max 32GB/SD card to store videos and pictures.