4G visual doorbell is equipped with a mature 4G communication module, compatible with all networks including 4G, 3G and 2G. It does not rely on local WiFi and can operate independently by simply inserting a SIM card. This design perfectly addresses the security and access control needs in outdoor, remote areas, and isolated villas where network wiring is inconvenient. The device integrates features such as high-definition video recording, two-way video communication, AI intelligent detection, multiple unlocking methods, access card management, and remote settings. It is combined with a dedicated Dingdong doorbell to form a complete access control system.
