# Dahua Technology ASC2204B-S security door controller Bare 4 door(s) RS-485

**URL:** https://aio.lv/en/product--dahua-10012511028--11636952
**Data updated:** 2026-02-17 11:02 (EET)
**Category:** Home Automation
**Manufacturer:** DAHUA
**Manufacturer code:** 1.0.01.25.11028
**EAN:** 6939554993411
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 158.99 €
**Prices and availability valid until:** 2026-07-27 23:59
**Price without VAT (21%):** 131.40 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dahua-10012511028--11636952

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.89 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

The Dahua Technology ASC2204B-S is a security door controller designed for managing access to up to 4 doors. It features RS-485 communication for reliable connectivity. Ideal for enhancing security in various settings, it provides efficient control and monitoring of access points.

## Long description

The Dahua Technology ASC2204B-S security door controller is a compact bare unit engineered to manage access for up to four doors. Designed for integration into building access systems, it supports both RS-485 and Wiegand communication and offers TCP/IP connectivity for centralized management. The controller stores user records and swipe logs locally, supports power-off memory protection and online firmware updates, and includes built-in real-time clock functionality for accurate event timestamping.
Advantages
This controller combines multiple communication options (RS-485, Wiegand and TCP/IP) to fit diverse installation topologies and legacy readers. High-capacity local storage for users and swipe records reduces dependency on immediate server connectivity while enabling reliable offline operation. The device supports common access control functions—interlock, group combination, anti-passback and remote unlock—helping implement complex access policies. A range of alarm inputs and tamper detection improves site security, and PoE support simplifies power and network cabling for installations that use Power over Ethernet.
Suitable for
 Small to medium commercial buildings with up to four controlled entrances
 Office suites requiring centralized access management and event logging
 Parking or service doors integrated into an existing access control network
 Sites needing offline record retention and local decision-making for access
Key specifications
 Door capacity: up to 4 doors
 Communication interfaces: RS-485, Wiegand (W26/W34), TCP/IP
 User capacity: up to 100,000 users stored locally
 Event log capacity: up to 500,000 card swipe records
 Access control features: interlock, group combination, anti-passback, remote unlock
 Alarm support: reader tamper, intrusion, door sensor timeout, duress, illegal card threshold, incorrect password
 Time features: built-in RTC, manual and automatic time synchronization
 Power options: Power over Ethernet (PoE) support and power-off memory protection
 Reliability: watchdog protection and support for online firmware upgrades
 Environmental operating range: -30 °C to 60 °C
 Form factor: bare case for rack or system integration
How to use
Install the controller in a suitable equipment enclosure and connect door hardware, readers and sensors according to the installation plan. Choose the appropriate communication method—RS-485 or Wiegand—for each reader and connect network cabling for TCP/IP or PoE where available. Configure system parameters and user credentials through the management software, define access zones, schedules and anti-passback policies, and synchronize the device clock. After configuration, verify door inputs, exit buttons and alarm responses, and test user enrollment and event logging to confirm correct operation.
Usage recommendations
For reliable performance, plan cable runs to minimize electrical interference on RS-485 lines, use quality readers compatible with Wiegand formats W26 or W34, and back up configuration data regularly. If PoE is used, ensure the switch provides adequate power budget. Schedule firmware updates during maintenance windows and test alarm integration with the central monitoring system.

## Specifications

| Feature | Value |
|---|---|
| Interface | RS-485 |
| Certification | CE/FCC/UL |
| Power consumption (typical) | 41.6 W |
| Supported network protocols | IPv4; TCP; UDP |
| Operating relative humidity (H-H) | 5 - 90 |
| Package weight | 600 g |
| Operating temperature (T-T) | -30 - 60 |
| Height | 106 mm |
| Width | 210 mm |
| Depth | 50 mm |
| Number of users | 100000 user(s) |
| Case design | Bare |
| Package depth | 87 mm |
| Package height | 166 mm |
| Package width | 255 mm |
| Operating voltage | 12 V |
| Active tampering alarm | Yes |
| RS-485 ports | 5 |
| Operating current | 1.4 A |
| Maximum number of doors | 4 door(s) |
| Built-in UPS | No |
| Number of Wiegand readers supported | 4 |
| Exit button supported | Yes |
| Alarm input channels | 1 |
| Wiegand interface | Yes |
| Power consumption (no load) | 0.8 W |

## FAQ

### How much does the Dahua Technology ASC2204B-S security door controller cost, and is it available for purchase?

The price is 158.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 07.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Dahua Technology ASC2204B-S security door controller be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All DAHUA products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized DAHUA service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### Where can I download the instructions for Dahua Technology ASC2204B-S security door controller?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/11636952/66874231_large.webp