VTH8A21KMS-CW - Intercom Dahua Technology - Free user manual and instructions
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| Product Type | Video Intercom |
| Brand | Dahua Technology |
| Model | VTH8A21KMS-CW |
| Display | 7-inch TFT LCD, 1024x600 resolution |
| Camera | 2 MP, wide-angle lens, night vision |
| Audio | Full-duplex two-way communication, echo cancellation |
| Dimensions (Indoor Unit) | 200 x 140 x 20 mm |
| Weight (Indoor Unit) | 0.45 kg |
| Power Supply | PoE (IEEE 802.3af) or DC 12V, 1A |
| Power Consumption | < 6W |
| Interface | 1 x Ethernet RJ-45, 1 x alarm input, 1 x alarm output |
| Storage | Supports microSD card up to 128 GB |
| Operating Temperature | 10°C to 55°C |
| Mounting | Wall-mounted flush or surface |
| Main Functions | Video call, remote unlock, intercom, alarm monitoring, voice message |
| Connectivity | IP-based, supports Dahua VDP protocol |
| Security | Encrypted communication, user authentication |
| Maintenance | Clean with soft dry cloth; avoid liquids and abrasives |
| Replacement Parts | Faceplate, camera module, motherboard available |
| Repairability | Modular design, easy to replace components |
| Compliance | CE, FCC, RoHS |
Frequently Asked Questions - VTH8A21KMS-CW Dahua Technology
How do I install the VTH8A21KMS-CW intercom?
Mount the indoor unit on a wall using the provided bracket. Connect to a PoE switch or DC power adapter. Pair with the outdoor station via the Dahua VDP app.
Can I use this intercom without a network?
No, it requires an IP network for communication with the outdoor station and remote access via app.
What is the default IP address of the device?
Default IP is 192.168.1.108 (check label). You can find it using the Dahua ConfigTool.
How do I reset the VTH8A21KMS-CW to factory defaults?
Press and hold the reset button (small hole) for 10 seconds using a paperclip while powered on.
Does it support remote unlocking via smartphone?
Yes, use the DMSS app to receive calls and unlock doors remotely.
What is the maximum distance between indoor and outdoor units?
There is no hard limit as long as they are on the same network; practical limit is network cable length (100m) or Wi-Fi range.
Can I add multiple indoor units?
Yes, up to 3 indoor units can be paired with one outdoor station for multi-room answering.
How do I clean the touchscreen?
Use a soft, lint-free cloth slightly dampened with water. Do not use alcohol or solvents.
What is the warranty period?
Standard 2-year warranty from Dahua. Check with your reseller for specific terms.
Can I integrate this intercom with a security system?
Yes, it has alarm input/output ports for connecting to sensors and alarms, and works with Dahua NVRs.
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