VTO6531F-S2 - The video intercom offers advanced access control with IP facial recognition, a 4.3-inch display, and a 2MP dual-lens HD camera. It recognizes faces up to 2 meters away with 99.9% accuracy and a 0.2-second recognition speed. It integrates white lights for night vision and stores up to 20,000 faces and 20,000 cards. It supports remote unlocking, PoE connection, IP65 protection, multi-user management for up to 40,000 users, and interfacing with apps, an internal monitor, and management software, making it ideal for condominiums and businesses. Dahua
TOTALER AUSVERKAUF ×
CLEARANCE SALE!
Take advantage of our must-see outing offers.
Discover the promo >>
VTO6531F-S2 | IP EXTERNAL STATION WITH KEYBOARD

The Dahua VTO6531F-S2 video intercom is an advanced solution for access control in residential and business settings, ideal for condominiums, offices, and housing complexes. Equipped with a 4.3-inch display and 2MP dual-lens HD camera, it offers rapid facial recognition with 99.9% accuracy and a detection speed of 0.2 seconds up to 2 meters away. It supports multiple unlocking methods, including facial recognition, password, RFID card, and QR code. Access management is simple and comprehensive, thanks to the capacity to store up to 40,000 users and 20,000 faces. The product also features a robust IP65 structure, PoE compatibility, and remote management via app, internal monitor, or software, ensuring maximum security in any weather conditions .
Main specifications:
- 4.3” high-resolution display
- 99.9% facial recognition up to 2 meters
- Up to 40,000 users and 20,000 faces
- Unlock with fingerprint, card, password and QR code
- Remote control via app, standard PoE, IP65
Further details

Technical data sheet
Model | VTO6531F-S2 |
System | |
Main Processor | Embedded Processor |
Operating System | Embedded Linux OS |
Button Type | Mechanical |
Interoperability | CGI;ONVIF |
Network Protocol | FTP;RTMP;HTTP/HTTPS;DNS;RTSP;SSH;ONVIF;SIP;RTP |
Basic | |
Screen Type | Non-touchscreen |
Display Screen | 4.3-inch display screen |
Screen Resolution |
800 (H) × 480 (V) |
Room |
1/2.8" 2MP CMOS high-definition, low illumination, dual cameras |
Field of View | H: 95°; V: 50°; D: 110° |
WDR | 120 dB |
Noise Reduction | 3D NR |
Video Compression | H.264; H.265 |
Video Resolution | Main stream: 720P/D1/WVGA; Sub stream: 1080P/720P/D1/WVGA/CIF/QVGA |
Video Frame Rate | 25 fps |
Video Bit Rate | 1,024 kbps–8,192 kbps |
Light Compensation | Auto white light |
Audio Compression | G.711a; G.711u; PCM |
Audio Input | 1 channel |
Audio Output | Built-in speaker |
Audio Mode | Two-way audio |
Audio Enhancement | Echo suppression/digital noise reduction |
Audio Bit Rate | 16 kHz, 16 bit |
Function | |
Communication Mode | Full digital |
Verification Method | Remote;Face Recognition;Card;Password |
Auto Snapshot | Yes |
Information Release | Receive and view text information released by the management center. |
Leave Videos | Yes (SD card inserted in VTH is needed) |
Web Configuration | Yes |
Auto Registration | Yes |
RFID | |
Card Type | IC card |
Performance | |
Card Reading Distance | 0 cm–5 cm (IC card) |
Issue Card Locally | Yes |
Face Recognition Height Range | 1.1 m–2.2 m (3.61 ft–7.22 ft) |
Face Recognition Distance | 0.3 m–2.0 m (0.98 ft–6.56 ft) |
Face Recognition Accuracy | 99.9% |
Face Recognition Time | 0.2 seconds |
Casing Material | Aluminum alloy |
Capacity | |
Card Capacity | 20,000 |
Face Image Capacity | 20,000 |
Port | |
RS-485 | 1 |
Wiegand | 1 (they can be set as an input or output port) |
Alarm Input | 2 channels |
Alarm Output | 2 channels |
Power Output | 1 port (12 V, 500 mA) |
Exit Button | 1 channel |
Door Status Detection | 1 channel |
Lock Control | 1 channel, open by default |
Network Port | 1 × 10Mbps/100Mbps Ethernet port |
Alarm | |
Tamper Alarm | Yes |
General | |
Unlock Password Mode | User, public and hard passwords |
Appearance Color | Silver |
Power Supply | 12 VDC, 2 A; PoE Standard |
Power Adapter | Optional |
Installation | Flush Mount; Wall Mount |
Certifications | THERE IS |
Accessory | Power supply (optional); Flush mount box (optional) |
Product Dimensions | 389 mm × 145 mm × 44.1 mm (15.31" × 5.71" × 1.74") |
Protection | IP65 rated (Silicone sealant is required. See the quick start guide for more information). |
Operating Temperature | –30 °C to +60 °C (–22 °F to +140 °F) |
Operating Humidity | 0%–90% (RH), non-condensing |
Operating Altitude | 0 m–3,000 m (0 ft–9842.52 ft) |
Power Consumption | ≤5W (standby), ≤18W (working) |
Gross Weight | 1.7 kg (3.75 lb) |