This 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.evice supports various usage methods such as local button operation, remote control via the TUYA intelligent APP for connection with graffiti, SMS command management,

and card-based unlocking. It is suitable for multiple scenarios including home, commercial use, and parks, and combines the core functions of doorbell, surveillance, and access control. It is a comprehensive security device integrating convenience, security, and intelligence, building a 24-hour intelligent security defense line at the doorstep.

Dingdong doorbell pairing: The main unit can be quickly paired with the matching Dingdong doorbell, and it can receive real-time visitor ringtone alerts indoors.

Core Features

1. 4G Universal Network Support, Operates Even Under Network loss Conditions

Equipped with a high performance 4G communication module backward compatible with 3G/2G networks. No home WiFi or Ethernet cable is required; simply insert a SIM card to establish network communication. The device automatically scans and connects to networks and extends the network scanning duration under weak signal conditions. Upon network disconnection, it automatically switches to access control only mode and resumes full function mode once connectivity is restored. It can be reliably deployed for non wiring scenarios including villas, farms, livestock farms, streets, parks and schools.

2. AI Multi‑object Smart Detection, Real‑time Alerts for Abnormal Events

Built‑in professional AI chip and algorithms for accurate recognition of four object types: humans, pets, parcels and vehicles. When abnormal motion is detected at the entrance, events are instantly pushed to the paired mobile APP with synchronous video recording. It delivers 24/7 real‑time entrance monitoring, reliably capturing courier deliveries, stranger loitering and vehicle parking. Moving beyond the simple chime‑only function of conventional doorbells, it greatly enhances security performance.

3. High‑Definition Starlight Night‑Vision Lens, Crisp Footage Day & Night

Features a 2MP HD camera with 110° horizontal wide angle coverage for complete visibility of the entrance zone. Applying starlight grade night vision technology, it produces sharp footage under low light scenarios. The LED fill light turns on automatically in total darkness to achieve zero blind spot monitoring round the clock, enabling clear identification of visitors and surroundings after dark.

4. Seven Unlock Modes, Flexible for Different User Groups

Offering seven unlock options: password unlock, card unlock, remote APP unlock, DTMF call unlock, auto answer call unlock, SMS unlock and exit button unlock. It supports temporary passwords, time limited passwords and batch access card management. Suitable unlock solutions are available for the elderly, children, guests and staff, balancing household convenience and site access management requirements.

5.  Multi device Linkage, Remote Video Intercom

Works with the TUYA Smart APP. When a visitor presses the doorbell, the unit automatically triggers a video call with two way HD audio video intercom. Up to 5 mobile or landline numbers can be paired. It will sequentially dial these numbers if the first call goes unanswered. You may communicate with visitors in real‑time even when away or on business trips, with no distance limits for remote interaction.

6.  Large capacity Storage & Permission Control, Ideal for Home & Commercial Deployment

Supports local video recording via SD card up to 128 GB for instant playback of entrance footage. The system can save 250 user passwords and 1000 access cards, catering to high traffic environments including villas, guesthouses, industrial parks and retail shops. Hierarchical admin permissions, batch password import / export and centralized number management enable fast and simple device maintenance.

7.  Dual status Indicators & Mis operation Prevention, Rugged & Reliable

Dual feedback via LED indicators and buzzer tones delivers clear notifications for network scanning, calls, successful or failed operations. A multi function RESET button supports pairing, firmware upgrade and factory reset. With a wide operating temperature range, the unit tolerates extreme hot and cold conditions and ensures stable long term outdoor performance.

Detailed parameters

Communication network: Compatible with 4G/3G/2G universal network

Camera: 200,000 pixel high-definition camera

Field of view: Horizontal 110° wide-angle

Night vision specification: Starlight-level night vision, automatic LED lighting on in complete darkness

Working voltage: DC 12V - 15V

Working current: Approximately 220mA

Standby current: Approximately 130mA

Operating temperature: -20℃ ~ 65℃ (resistant to high and low temperatures, suitable for outdoor use)

Body size: 215*125*42mm

Storage expansion: Maximum support for 128G Micro SD card (local video recording)

User password capacity: 250 groups (password length 2-8 digits can be customized)

Access card capacity: Maximum 1,000 cards (admin card + user card total)

Can be bound with mobile phone: Up to 5 groups (mobile phone or landline can be used)

Locking duration: Adjustable from 00 to 99 seconds

Applicable scenarios

1. Single-family villa / self-built house: No whole-house WiFi, 4G independent network connection, remote intercom, remote unlocking, ensuring home safety, compatible with courtyard gates and entrance doors.

2. Farm / livestock farm / suburban park: In remote areas, no network wiring. High-temperature and low-temperature resistant body + AI detection, real-time monitoring of entrances and exits, preventing unauthorized entry by outsiders.

3. School / park / factory: Large-capacity access control cards, group password management, multi-person access control, seven-level unlocking methods compatible with employees, visitors, and managers.

4. Street shops / street-side stores: Outdoor installation, starlight night vision + real-time recording, doorbell， monitoring， and access control， more secure for night duty.

5. Homestay / rental house： Supports temporary period passwords， convenient passage for short-term visitors， remote viewing of door dynamics， reducing management costs.