SKU: 28615180968

DAHUA VTO6521H Apartment Door Station

$144.90 $161.00
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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22

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Description

DAHUA VTO6521H Apartment Door StationVTO6521H Apartment Door Station > 4. 3 inch IPS display; screen resolution 800480 > 2MP CMOS; true WDR > Touch button; IP65 > Operating temperature: 30C to +60C Auto light illumination reduces light pollution > Multiple unlock modes: Password unlock, IC card unlock, and remote unlock > Support 20,000 users and 10,000 cards > Support full duplex; management platform, and voice call through APP > Support SIP server > Support duress alarm, tamper alarm,

VTO6521H

Apartment Door Station

> 4.3 inch IPS display; screen resolution 800×480

> 2MP CMOS; true WDR

> Touch button; IP65

> Operating temperature: -30°C to +60°C · Auto light illumination reduces light pollution

> Multiple unlock modes: Password unlock, IC card unlock, and remote unlock

> Support 20,000 users and 10,000 cards

> Support full duplex; management platform, and voice call through APP

> Support SIP server

> Support duress alarm, tamper alarm, and door sensor timeout alarm


Product Data

System

Main Processor

Embedded processor

Operating System

Embedded Linux operating system

Button Type

Touch button

Network Protocol

SIP; P2P; IPv4; FTP; UPnP; DNS; DDNS; RTSP; RTP; TCP; UDP

ROM

4GB

RAM

1GB

Basic

Display

4.3 inch IPS screen

Screen Resolution

800×480

Camera

1/2.7" 2MP CMOS high definition, low illumination, white illuminator and IR illuminator

Field of View

Horizontal: 113.79°; vertical: 61.5°;

diagonal: 134.45°

Focal Length

2.8mm

Aperture

F2.0

WDR

120dB

Noise Reduction

3D noise reduction

Video Compression

H.264

Video Resolution

Main Stream: 720p, sub stream: 1080P

Frame Rate

Main Stream (720P@25fps), sub stream (1080P@25fps)
Main Stream (720P@30fps), sub stream (1080P@30fps)

Video Bit Rate

256Kbps–2048Kbps

Light Compensation

Auto white light

Audio Compression

G.711u

Audio Input

1

Audio Output

Built-in speaker

Audio Mode

Full duplex communication

Audio Enhancement

Echo suppression and cancellation/digital noise reduction

Audio Bit Rate

16KHz, 16Bit

Communication Mode

Full digital

Unlock Mode

Card/remote/password unlock

Card Type

IC card

Motion Detection

Video motion detection

Auto Snapshot

Yes

Leave Videos or Text Messages

Yes

Web Configuration

Yes

Performance

Card Reading Distance

1cm–5cm

Issue Card Locally

Yes

Casing Material

PC+ABS

Capacity

Card

10, 000

Port

RS-485

1

Wiegand

1 input port, 1 output port

Electric lock

1

Alarm Input

2

Alarm Output

2

Power Output

1 12V/100mA

Exit Button

1

Door Status Detection

1

Lock Control

1, normally open by default

Network

1 RJ-45 10Mbps/100Mbps self-adaptive

Alarm

Tamper

Yes

General

Unlock Password Mode

User password/public password/duress password

Color

Silver

Power Supply Mode

DC 12V2A

Power Adapter

Optional

Installation

Surface mount and Flush mount

Certification

CE/FCC

Accessory

Optional

Product Dimensions

389 mm×145 mm×41.9 mm (15.31"×5.71"×1.65")

Protection Grade

IP65 (silicone sealant is needed, see the quick start guide)

Operating Temperature

-30°C to +60°C (-22°F to +140°F)

Operating Humidity

10%RH–90%RH (non-condensing)

Operating Altitude

86kPa–106kPa

Power Consumption

≤5W (standby), ≤18W (working)

Net Weight

1.4 kg (3.09 lb)

Gross Weight

1.68 kg (3.70 lb)



Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 28615180968

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4.9 ★★★★★
Based on 5 reviews
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Product Reviews
J
Verified Purchase
John Quargnenti
Massapequa, US
★★★★★ 3
They need to find a better way to ship it
Style: 1 gal
What was left in the bottle worked great. However, the cap was off of the jug when I opened the package. Ididn't have enough for the other tires.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
E
Verified Purchase
Ernie Duchek
Massapequa, US
★★★★★ 5
Top notch tire sealant!
Size: 20oz
Really good sealant that lives up to it's description. Very easy to use and definitely delivers. Have used it on several Lazer Z mowers and works as advertised! Definitely would recommend this one!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
T
Verified Purchase
Thorin C. Guidry
Battle Creek, US
★★★★★ 5
This stuff just works! Very impressed. If you have a slow leak, get this!
Size: 20oz
This is the second time I've bought this product. I bought one initially to test it out and I was very impressed! I had put some used tires on some used rims for my side by side and I had a couple of them leaking slowly from the side of the rim. I put this stuff in, following the directions and have no more leaks! It's been about a week with the first one, and zero loss in air pressure. I took my side by side out on the trails and thrashed around a bit, still no leaks! This stuff is legit! It comes with a valve removal tool and red valve stem covers to show you which tires you've added this too. Very easy to use, no issues whatsoever. Saves you money having to take your tires somewhere to have them look at them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 15, 2025
R
Verified Purchase
Robert
Carnegie, US
★★★★★ 5
This stuff worked better than I thought it would
Size: 40oz
As my title says, this stuff worked better than I thought it would. In fact it worked so well today I will be ordering more. I say today because how can you tell if something like this is actually working... never getting a flat for years? In other words, if it fixes a flat before your eyes it works, otherwise you really don't know. See I had a lawn mower tractor that developed a real bad tire leak a couple of days ago. The way it happened was I cut a Russian Olive tree down, if you know what one of these trees are like, you already know why I got such a bad leak. These darn things have thorns that can get to be almost as big around as a pencil, and are just as sharp as a needle. Moreover, these spikes as I call them, can get to be 3" to 4" long. In short, if you run over one you will have a flat tire, period. That is unless you have this stuff inside the tire already. To make matters worse, if you run over a branch from this tree, you won't only get one or two thorns/spikes stuck in your tire, because as you drive the branch bends easily (only the spike are ridged), so before you know it you will end up with a half dozen of these spikes all the way around your tire, as if the whole tire has a new tread made up of a Russian Olive tree branch. Trust me on this, it will happen just like this. After pulling a half dozen 2" to 4" inch spikes out of the tire, I knew if I took it to a shop they would require me to put a tube in. With this inflation that isn't supposed to be an inflation going on, I'm sure it has made tire tubes today cost almost as much as the whole tire cost me just a couple of years ago. So I thought I'd put this product to a real test... I already have some in my John Deere 2305 tractor. Honestly, it shocked me how quick it worked. It worked so fast I didn't even need to add anymore air to the tire, because all the holes were shut. Pretty amazing stuff if you ask me! I followed the directions, they were easy to follow and the process was easy too. I removed the valve stem, put in 5 ounces of the solution, then put the valve stem back in, aired up the tire and it was instantly fixed... amazing, especially considering why the tire was flat... I should have taken a pic of the spikes. I did roll the tire around a bit, then mounted the tire back on the tractor and went right over and mowed my elderly neighbors lawn, so it got plenty of rotation time. That was about 4 hours ago and the tire is still rock hard. Like I said, I'm ordering more because after seeing this everything we have that runs slow will have this stuff in the tires! Oh, one other thing. The fix-it flat stuff in a spray can, DO NOT USE IT for applications like this! Because that stuff if left inside will actually glue your tire to the rim. Tires have been ruined trying to pry them away from the rim after putting in fix-a-flat, or whatever that crap is called. Sadly this "TireJect" is not recommended for high speed travel, it will through your tire out of balance. So use the fix-flat stuff in an emergency, carry one in your car just in case. Just make sure once you get the tire fixed wash the tire out real good before remounting it. I have never written such a long review in my life, but if you got through it I hope it helped. It's not often a product lives up to it's claims today, but this one in my opinion surpasses it, so I felt the need to say something. Besides, the warning about the Russian Olive tree just may save someone a lot of frustrations.
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Reviewed in the United States on May 24, 2023
J
Verified Purchase
Juno
Lowell, US
★★★★★ 5
It Really Works!
Size: 40oz
Excellent product-stops leaks!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026

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