Brand originChina
Discontinued
Discontinued
Dahua VTO6521K
Category
Intercom
First seen by Awernica
Oct 2026
Keep every device you have installed in one list – firmware, lifecycle and replacements. No card.
Software Support
2026-12-31
2 months left
Replacement
Not specified
No verified replacement
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Specifications
From the manufacturer's product information.
System
- Main Processor
- Embedded Processor
- Operating System
- Embedded Linux OS
- Button Type
- Mechanical
- Network Protocol
- RTSP; DNS; P2P; UPnP; RTP; RTMP; SIP; SSH; HTTP/HTTPS; ONVIF
Basic
- Screen Type
- Non-touchscreen
- Display Screen
- 4.3" LCD
- Resolution
- 800 (H) × 480 (V)
- Camera
- 1/2.8" CMOS 2-MP low-illumination HD color camera
- Field of View
- H: 86.4°; V: 46.2°; D: 100.6°
- WDR
- 120 dB
- Noise Reduction
- 3D NR
- Video Compression
- H.264
- Video Resolution
- 50 Hz: Main stream (720p@25 fps), sub stream (1080p@25 fps); 60 Hz: Main stream (720p@30 fps), sub stream (1080p@30 fps)
- Video Frame Rate
- 25 fps
- Video Bit Rate
- 256 kbps–8 Mbps
- Light Compensation
- Auto white light
- Audio Compression
- G.711a; G.711u; PCM
- Audio Input
- 1
- Audio Output
- Built-in speaker
- Audio Mode
- 2-way voice communication
- Audio Enhancement
- Echo suppression/digital noise reduction
- Audio Bit Rate
- 16 kHz, 16 bit
Function
- Communication Mode
- Full digital
- Unlock Mode
- Card; remote; password; QR code
- Card Type
- IC card
- Motion Detection
- Video motion detection
- Leave Videos
- Yes
- Web Configuration
- Yes
Performance
- Card Reading Distance
- 1 cm–3 cm (0.39"–1.18")
- Issue Card Locally
- Yes
- Casing
- 316 stainless steel
Capacity
- Card Capacity
- 10, 000
Port
- RS-485
- 1
- Wiegand
- 1 (input or output, configurable)
- Electric Lock
- 1
- Alarm Input
- 1 (digital quantity)
- Alarm Output
- 1 (relay)
- Power Output
- 1-ch, 12 V/200 mA
- Exit Button
- 1
- Door Status Detection
- 1
- Lock Control
- 1, normally open by default (can be expanded to 2 channels with RS-485)
- Network Port
- 1 × RJ-45 10/100 Mbps Ethernet port
Alarm
- Tamper Alarm
- Yes
General
- Unlock Password Mode
- User password; public password; duress password
- Appearance color
- Silver
- Power Supply
- 12 VDC, 2 A
- Power Adapter
- Optional
- Installation
- Flush Mount; Surface Mount
- Certifications
- CE; FCC
- Accessory
- Optional: flush mount box, rain cover
- Product Dimensions
- 406 mm × 143 mm × 54.05 mm (15.98" × 5.63" × 2.13")
- Protection
- IP65 rated (silicone sealant is needed for installation); IK08
- Operating Temperature
- –30 °C to +60 °C (–22 °F to +140 °F)
- Operating Humidity
- 10%–90% (RH), non-condensing
- Operating Altitude
- 0 m–3,000 m (0 ft–9,842.51 ft)
- Power Consumption
- ≤ 5 W (standby), ≤ 18 W (working)
- Gross Weight
- 2.05 kg (4.52 lb)
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