Remote unlock The doorbell can connect to a 12V electronic lock. Multiple Intercom Up to 2 doorbells can be connected with 4 indoor monitors(The slave monitor is MZ-VDP-739EM). Dual-Way Communication between indoor monitor and outdoor camera; Call Transfer among monitors. You don't always go downstairs open the door after install the multiple intercom.TMEZON Smart and Innovative IP video intercom system. You can answer the door in your hand! 7 Inch LCD Monitor and Mini Doorbell 7 inch TFT display monitor with slim design, touch-key operation, hand-free, Support Wifi/RJ45 port connect to internet(Only connect with 2.4GHZ router band). About Wifi connection: Please note the wifi video intercom system does not mean you dont need wire any cable. The monitor support WIFI network, but the indoor monitor and doorbell is Wired, which make sure the power, the video work stable and you can extend longer distance.
About the extension wire: The extension wires is not included in the box, but we will provide the 4 core connector for you connect the extension wires. You can use RVV4/Cat5/Cat6/RG59 wires to extend the monitor to doorbell, or monitor to monitor according to your need, maximum distance can exceed 100M. Monitor: Display:7 TFT LCD(16:9), 800(H)x480(V) Unlock:Monitor, smartphone and tablet unlock Memory:Micro SD Card not include, 64GB max.The item "Wireless WiFi Video Door Phone Intercom System 2x 7 Monitor 1x Doorbell Camera" is in sale since Thursday, June 4, 2020. This item is in the category "Home & Garden\Home Improvement\Home Security\Door Entry Systems & Intercoms". The seller is "tmezon_usa" and is located in Zhuhai. This item can be shipped worldwide.