Product SKU: DHI-VTO6531H
Product Overview
The Dahua DHI-VTO6531H is a 2MP IP face recognition apartment door station designed for apartment lobbies, residential complexes and managed building entrances. Its 4.3-inch IPS display, touch keypad, IC card reader and face recognition provide several ways for residents, staff and authorised visitors to unlock a connected door. The station supports up to 20,000 users, 10,000 face images and 10,000 cards, with liveness detection and a listed recognition time of 0.2 seconds per person. A 4mm camera with white and infrared illumination, 120dB WDR and automatic day/night switching supports visitor identification across changing lighting conditions. Full-duplex communication, SIP support, app calling, remote unlocking, messaging and auto snapshots provide broader intercom functionality. The IP65 unit supports surface or flush mounting, but it requires compatible indoor monitors, management equipment, locking hardware, 12V DC power and correctly sealed installation.
Key Capabilities
Fast Face Recognition
Face verification is listed at 99.5% accuracy with recognition completed in approximately 0.2 seconds per person. Liveness detection and configurable recognition thresholds help support controlled entry at busy apartment and building entrances.
Multiple Unlocking Methods
Residents and authorised users can unlock through face recognition, IC card, password or remote release. User, public and duress password options allow the access method to be configured around the building’s operating requirements.
2MP Visitor Camera
The 2MP camera uses a fixed 4mm lens, white and infrared illumination, 120dB WDR and automatic ICR switching. This helps the station capture visitors around entrances affected by low light, daylight glare and changing background brightness.
Full-Duplex Intercom
Full-duplex communication allows both parties to speak naturally without taking turns. Echo suppression, echo cancellation and digital noise reduction support clearer conversations through compatible indoor monitors, management stations and app-based calling.
Large Resident Capacity
Support for up to 20,000 users, 10,000 face images and 10,000 IC cards makes the unit suitable for larger apartment and community intercom systems where many residents and credentials must be centrally managed.
Door and Alarm Integration
Lock control, exit-button, door-status, alarm, RS-485 and Wiegand connections allow the door station to participate in a wider entrance-control design using compatible locks, readers, sensors and management equipment.
Best For
- Apartment Lobbies: Combines visitor calling, resident identification and several unlocking methods at a shared building entrance.
- Residential Complexes: Supports large user, face and card databases across managed community intercom systems.
- Strata Properties: Provides remote unlocking, messaging, app calls and door-status integration for controlled common entries.
- Managed Commercial Entrances: Uses face, card and password access where staff or authorised occupants require several credential options.
- Replacement Intercom Projects: Suits sites that specifically require compatibility with an established VTO65-series system.
Why Choose the DHI-VTO6531H
The DHI-VTO6531H combines apartment intercom calling and multi-credential access control in one entrance station, reducing the need for separate face, card and keypad devices. Its 20,000-user capacity, fast face recognition, liveness detection and full-duplex communication make it better suited to larger residential projects than a basic single-button door station. The 4.3-inch display gives visitors clear prompts, while app calls, remote unlocking, snapshots and message functions support managed entrances where residents may not always be near an indoor monitor. Offered through Security Wholesalers, this model should be selected after confirming compatibility with the existing indoor stations, management platform, firmware and door hardware. It is listed as discontinued, which is particularly important for replacement and future-expansion planning.
Buyer Decision Tips
Face Recognition Tip: Position the unit so users stand approximately 0.3m to 2m from the camera. The recommended user-height range is 1.1m to 2.4m when the lens is installed about 1.4m above the ground.
Replacement and Installation Tip: This model is discontinued. Confirm firmware, indoor-monitor, SIP, app and management-platform compatibility before using it for an extension or replacement, and follow the required silicone-sealing instructions for IP65 installation.
Key Features & Technical Specifications
| Product Type |
IP face recognition apartment door station. |
| User Capacity |
Up to 20,000 users. |
| Face and Card Capacity |
Up to 10,000 face images and 10,000 IC cards. |
| Unlocking Methods |
Face, IC card, password and remote unlocking. |
| Face Recognition |
0.2-second recognition time, 99.5% verification accuracy and liveness detection. |
| Recommended Recognition Position |
0.3m-2m distance and 1.1m-2.4m user height range. |
| Display |
4.3-inch IPS screen with 800 × 480 resolution. |
| Camera |
1/2.7-inch 2MP CMOS camera with low-light imaging. |
| Lens and Field of View |
4mm F1.6 lens; 87.42° horizontal, 46.48° vertical and 104.13° diagonal view. |
| Illumination and Day/Night |
Automatic white light, automatic infrared light and ICR day/night switching. |
| Image Enhancement |
120dB WDR and 3D noise reduction. |
| Video Compression |
H.264 with up to 25fps or 30fps stream operation. |
| Audio |
Full-duplex G.711u communication with built-in speaker and audio input. |
| Intercom Functions |
SIP, app voice calls, remote unlocking, auto snapshots and video or text messages. |
| Card Reading |
IC card reader with a listed reading distance of 1cm-5cm. |
| Door Connections |
One electric-lock connection, exit-button input, door-status input and normally open lock control. |
| Alarm and Expansion Interfaces |
Two alarm inputs, two alarm outputs, one RS-485 port and Wiegand input/output. |
| Network |
One self-adaptive 10/100Mbps RJ-45 Ethernet port. |
| Power |
12V DC, 2A; power supply optional; up to 5W standby and 18W working. |
| Protection and Installation |
IP65 with required silicone sealing; surface or flush mounting. |
| Operating Conditions |
-30°C to +60°C at 10%-90% non-condensing humidity. |
| Dimensions and Weight |
388.5 × 145.5 × 43.5mm; net weight 1.0kg. |
Ideal Use Cases
Apartment Lobby Entrances
Provide visitor calling, face recognition, card access and keypad entry at the main lobby door.
Residential Complex Gates
Manage large resident databases while allowing calls to compatible indoor or management stations.
Strata Common Entries
Use card, password, remote and face unlocking for residents, contractors and authorised visitors.
Managed Building Receptions
Connect visitor calls and entrance events to a compatible management platform or security desk.
Existing VTO65-Series Systems
Use where an established project specifically requires this discontinued model and compatibility is confirmed.
Choosing the Right Model
- Choose this model if: The project requires face, card, password and remote unlocking with a 20,000-user capacity.
- Choose a current-generation model if: The project is new and long-term product availability, expansion and support are priorities.
- Choose a simpler door station if: Face recognition and large resident databases are unnecessary.
- Confirm the mounting method if: The surface or flush plate, wall opening and cable route have not been planned.
- Confirm system compatibility if: The unit will replace another door station or connect to existing monitors and management software.
FAQs
- What is the DHI-VTO6531H designed for?
The DHI-VTO6531H is a face-recognition apartment door station for controlled building entrances, apartment lobbies and community intercom systems. It combines visitor calling, a 2MP camera, a 4.3-inch display and several unlocking methods in one outdoor-rated unit. It requires compatible indoor monitors, management equipment, locks, power and network infrastructure to operate as a complete intercom and access-control solution.
- Which unlocking methods does the DHI-VTO6531H support?
The DHI-VTO6531H supports face, IC card, password and remote unlocking. Password options include user, public and duress passwords, while cards can be issued locally and read from approximately 1cm to 5cm. Remote unlocking depends on the connected intercom platform, indoor monitor or app configuration. The door lock, exit button and door-status wiring must also be designed and commissioned correctly.
- How fast and accurate is face recognition?
The door station lists a face-recognition time of 0.2 seconds per person and face-verification accuracy of 99.5%. It also supports liveness detection and configurable recognition thresholds and profile angles. Dahua recommends a recognition distance of 0.3m to 2m and a user height range of 1.1m to 2.4m when the lens is installed approximately 1.4m above the ground.
- How many users, faces and cards can the door station store?
The DHI-VTO6531H supports up to 20,000 users, with storage for 10,000 face images and 10,000 IC cards. This capacity suits larger apartment and managed-building systems, but the enrolment process, resident database, card allocation and management-platform design should be planned before deployment. Replacement projects should also confirm whether existing credentials and user data can be migrated to the selected system.
- Does the DHI-VTO6531H support two-way audio and app calling?
Yes. The door station supports full-duplex audio communication with a built-in speaker, audio input, echo suppression, echo cancellation and digital noise reduction. It can support management-platform communication and voice calls through a compatible app, and it also supports SIP server operation. Calling and remote access depend on compatible system components, network configuration, account setup and the software version used across the installation.
- Is the DHI-VTO6531H suitable for outdoor installation?
Yes. The DHI-VTO6531H has an IP65 protection rating and operates from -30°C to +60°C at 10% to 90% non-condensing humidity. Silicone sealant is required as directed in the quick-start installation guidance to achieve the specified protection. The unit should still be mounted with suitable weatherproof cable entry, drainage, fixings and protection for the connected lock, network and power wiring.
- What connections are available for locks, alarms and readers?
The DHI-VTO6531H provides one electric-lock connection, one normally open lock-control output, one exit-button input and one door-status input. It also includes two digital alarm inputs, two digital alarm outputs, one RS-485 interface and one Wiegand input and output. A 12V/100mA auxiliary power output is available. Final compatibility depends on the lock, reader, sensor and wiring requirements.
- What should I confirm before ordering the DHI-VTO6531H?
Confirm the required user and credential capacity, face-recognition position, indoor monitors, SIP or app workflow, lock type, exit button, door contact, alarm wiring, 12V DC power and surface or flush mounting arrangement. This model is listed as discontinued, so replacement and expansion projects should verify system and firmware compatibility. Security Wholesalers can review the planned components to identify likely installation or integration limitations before deployment.
Additional Information
Dahua DHI-VTO6531H Datasheet
