" The access control is offline again. Visitors can't get in, I'm on a business trip abroad, and my parents are anxious at home ";" The community access control only supports card swiping. The elderly are stopped outside when they forget their cards, which is very inconvenient ";" Visitor registration in office buildings is cumbersome, paper records are easy to lose, and safety traceability is impossible ";" Traditional access control relies on broadband for communication. The signal is poor in remote parks, and it fails at critical moments "...

In scenarios such as communities, office buildings, industrial parks, and villas, access control, as the first line of safety defense, often becomes a "headache" for users and managers due to problems such as "unstable communication, single unlocking method, low management efficiency, and lack of safety guarantee". Traditional access control either relies on a single network and fails when offline; or has limited unlocking methods and cannot meet the needs of different groups of people; or lacks intelligent linkage. Visitor management and safety traceability all rely on manual work, resulting in low efficiency.

To solve these pain points, after many rounds of R & D and testing, we have launched the "4G Telephone Line Video Intercom Intelligent Access Control" - with 4G + telephone line dual network as the core, integrating multiple functions such as video intercom, multi-dimensional unlocking, intelligent monitoring, and customized settings. It not only makes up for the shortcomings of traditional access control, but also redefines the user experience of access control systems with four core advantages of "stability, safety, intelligence, and convenience", becoming the "ideal access control solution" for property management, enterprises, and owners.

I. Product Overview: More Than Just Access Control, It's an Intelligent Access Management Center

This 4G telephone line video intercom intelligent access control is not a simple "door opening tool", but an intelligent access management center integrating "communication, intercom, unlocking, monitoring, and management". The product has a built-in 4G module, supporting 4G and telephone line dual-mode communication, without relying on broadband, covering various scenarios such as no network and weak network; equipped with a 3-megapixel CMOS camera, combined with white light fill light, it can capture clear images even in low illumination of 0.1lux; supports Tuya App video intercom and voice intercom dual modes, enabling real-time visual communication between visitors and residents; provides 6 unlocking methods including password, ID card, App, button, postal lock, and linkage unlocking, meeting all-scenario access needs; at the same time, it has a built-in intelligent recording system, timing management system, and linkage control system, suitable for multiple scenarios such as communities, office buildings, villas, industrial parks, schools, and hospitals. Both ordinary residents and property managers can obtain efficient, safe, and convenient user experience.

Following the design concept of "practicality first", the product has a working voltage of DC 12 ~ 18V, a working temperature range of -10 ℃ ~ 70 ℃, and a storage temperature of -20 ℃ ~ 70 ℃. It can operate stably whether in the severe cold of the north or the scorching heat of the south; the body is equipped with a waterproof sponge sticker and a rainproof cover, with excellent protection performance, and can be installed outdoors without worry; the operation interface is simple and intuitive, supporting the switching of multiple languages such as Chinese, English, and French, so that the elderly and children can easily use it.

II. Dual-Network Communication Guarantee: Uninterrupted Signal, Unobstructed Access

Stable communication is the core foundation of the access control system. This product innovatively adopts the "4G + telephone line" dual-mode communication design, which completely solves the pain point of traditional access control relying on a single network and being prone to disconnection.