DAHUA ASC2204B-S 4 Door One-way Access Controller
SKU: 42320040429

DAHUA ASC2204B-S 4 Door One-way Access Controller

Sale price$134.06 Regular price$148.95
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Description

DAHUA ASC2204B-S 4 Door One-way Access ControllerASC2204B S > Support TCP IP communication > Two dual communication protocols: RS 485 and Wiegand (W26 and W34) > Holds 100,000 users and stores 500,000 card swiping records > Support interlock, group combination, anti passback, remote unlock, and more > Support card reader tamper alarm, intrusion alarm, door sensor timeout alarm, duress alarm, illegal card exceeding threshold alarm, and incorrect password alarm > Built in RTC, support manual time

ASC2204B-S

> Support TCP/IP communication

> Two dual communication protocols: RS-485 and Wiegand (W26 and W34)

> Holds 100,000 users and stores 500,000 card swiping records

> Support interlock, group combination, anti-passback, remote unlock, and more

> Support card reader tamper alarm, intrusion alarm, door sensor timeout alarm, duress alarm, illegal card exceeding threshold alarm, and incorrect password alarm

> Built-in RTC, support manual time synchronization and auto time synchronization

> Support power-off memory protection and online upgrade

> Support watchdog (a device that protects a system from software or hardware failures)

> Support PoE power supply




Product Data

System

Internet Protocol

IPv4; TCP; UDP

OSDP Protocol

Yes

SDK and API

Yes

Basic

Product Appearance

Model B slide rail

Buzzer

Yes

Casing Material

PC+ABS

Function

Unlock Mode

Card/remote/password/fingerprint unlock

Period List

128

Holiday Period

128

Network Update

Yes

First-Card Unlock

Yes

Remote Verification

Yes

Blocklist/Allowlist

Yes

Peripheral Card Reader

4 RS-485 card readers
4 Wiegand card readers

Multi-door Interlock

Yes

Group Combination

Card/password/fingerprint unlock

Real-Time Surveillance

Yes

Multiple Authentication

Yes

User

User (Card) Type

General user, VIP user, patrol user, guest user, blocklist user, and other user

Capacity

User

100,000

Fingerprint

3,000

Card

100,000

Record Capacity

500,000

Port

RS-485 Port

5 RS-485 ports

Wiegand

4 Wiegand ports

Network

One 10/100 Mbps network port

Alarm Input

1 (digital quantity)

Alarm Output

1 (relay)

Alarm Linkage

Yes

Exit Button

4

Door Status Detection

4

Lock Control

4, stays open by default

Alarm

Anti-Passback

Yes

Tamper

Yes

Duress

Yes

Door Sensor Timeout

Yes

Intrusion

Yes

Illegal Card Exceeding Threshold

Yes

Duress Fingerprint

Yes

General

Power Supply

Standard POE (an additional power supply for the door lock is needed);

DC 12V (support supplying power to the door lock)

IP Rating

IP20, IK04

Power Consumption

Standby 1.0W, working 13.0W (Standard PoE; rated voltage of the card reader power supply is 12V, and the total max. rated current is 1.4A);

Standby 0.8W, working 41.6W (DC 12V; rated voltage of the card reader power supply is 12V, and the total max. rated current is 1.4A; rated voltage of the door lock power supply is 12V, and the total max. rated current is 2A)

Product Dimensions

210 mm × 106 mm × 50 mm (8.27”× 4.17”× 1.97”)

Packaging Dimensions

Packaging box: 255 mm × 166 mm × 87 mm (10.04”× 6.54”× 3.43”)
Protective box: 508 mm × 265 mm × 190 mm (20.0”× 10.43”× 7.48”)

Operating Temperature

–30°C to +60°C (–22°F to +140°F)

Operating Humidity

5%RH–90%RH (no condensation)

Operating Altitude

0 m–1300 m (0 ft–4265.10 ft)

Operating Environment

Indoor

Gross Weight

0.6 kg (1.33 lb)

Installation

Surface/guide rail mount

Certification

CE/FCC/UL

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: 42320040429

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Reviewed in the United States on March 18, 2026
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★★★★★ 5
Love these floating shelves!
Color: Oak, Number Of Shelves: 2, Size: 36"W x 6.5"D
These shelves are perfect for my kitchen! They were easy to install. All the hardware was included. They are durable and sturdy and gave my kitchen wall an instant face lift!
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Reviewed in the United States on April 14, 2026
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A. Tucker
San Leandro, US
★★★★★ 3
Holes in brackets are not spaced for studs!
Color: White, Number Of Shelves: 2, Size: 67"W x 6.5"D
So the quality of this not great, but good enough and they look nice enough on the wall. However, the bracket holes are not spaced at 16" intervals. WTF? I'm not sure who designed this thing. The molly plugs that came with it look OK, but to play it safe I used a cobalt steel drill bit and made my own holes in the bracket. Easy enough with some wd40. My other pick with this is that the screws to anchor the shelf to the bracket are black and and very obvious... they should have supplied some kind of cap.
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Reviewed in the United States on January 31, 2026
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W Rogers
Whiting, US
★★★★★ 5
Excellent Quality and Beautiful!
Color: Natural Pine - Satin Clear Coat Finish, Number Of Shelves: Pack of 2, Size: 16 inch
This is the second order I’ve made of these shelves (a different length and color for a different room). I’ve put up floating shelves before, and over time they listed although they never fell down. Everything about these shelves suggests they will last a long time. The shelves are beautiful, very well sanded and varnished, and the wood grain is lovely (same with the darker shelves). The installation is relatively simple with easy-to-understand instructions and the support that the shelf fits into is sturdy. Everything works as the directions say, and the shelves seem sturdy when installation is complete. The seller clearly takes pride in their product; even the packaging is very carefully and artfully done. A drill makes the job far easier than it would with just a screwdriver. One set of my shelves are placed one directly below another, so it took some time and my 2 foot level to make sure they are vertically even. If the shelves are offset from each other, as we did with the first installation, it’s easier and takes less time. I would recommend these to anyone.
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Reviewed in the United States on April 26, 2026
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John P Williams
Lexington, US
★★★★★ 5
Premium Quality Shelves That Look Amazing
Color: American Walnut - Satin Dark Tone, Number Of Shelves: Pack of 3, Size: 36 inch, Color: American Walnut - Satin Dark Tone, Number Of Shelves: Pack of 3, Size: 36 inch
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