# Door controller DAHUA ASC2204B-S — 4-door bare unit, 12 V, 1.4 A, RS-485, 210×50×106 mm

**URL:** https://aio.lv/en/product--dahua-dhi-asc2204b-s--11683171
**Data updated:** 2026-01-30 13:37 (EET)
**Category:** Control Systems
**Manufacturer:** DAHUA
**Manufacturer code:** DHI-ASC2204B-S
**Warranty:** 3 Years
**Availability:** Available for order
**Price:** 284.49 €
**Prices and availability valid until:** 2026-08-09 23:59
**Price without VAT (21%):** 235.12 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dahua-dhi-asc2204b-s--11683171

## Delivery options

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

## Summary description

The DAHUA ASC2204B-S is a 4-door security door controller (bare unit) designed for access control systems. It operates at 12 V with a typical power consumption of 41.6 W and an operating current of 1.4 A. Communication is via RS-485. Compact dimensions (210×50×106 mm) and CE/FCC/UL certification make it suitable for commercial and residential installations requiring centralized door control.

## Long description

The DAHUA ASC2204B-S is a 4-door bare unit access controller for centralized security and access management. It operates at 12 V with an average power draw of about 41.6 W and an operating current of 1.4 A. The compact metal housing and RS-485 communication make it suitable for commercial and residential installations that require multi-door control and integration with access systems.
Advantages
This controller supports TCP/IP communication and dual communication protocols (RS-485 and Wiegand), offers storage for up to 100,000 users and 500,000 card swipe records, and includes multiple alarm inputs and protection features such as card reader tamper alarm, intrusion alarm, door sensor timeout alarm, duress alarm, and incorrect password alarm. Additional features include built-in RTC with manual and automatic time synchronization, power-off memory protection, online upgrade capability, watchdog protection, and PoE support. The unit is designed for installation as a bare controller and supports up to four doors.
Suitable for
 Small to medium commercial buildings requiring centralized access control
 Residential complexes with multi-door access management
 Integration with existing RS-485 or Wiegand card reader systems
 Installations needing PoE or remote TCP/IP communication
Key specifications
 Supported doors: 4
 Operating voltage: 12 V
 Typical power consumption: 41.6 W
 Operating current: 1.4 A
 Communication interfaces: RS-485, TCP/IP, Wiegand (W26/W34)
 User capacity: up to 100,000 users
 Event log capacity: up to 500,000 card swipe records
 Alarm inputs: tamper, intrusion, door sensor timeout, duress, threshold for illegal card, incorrect password
 Timekeeping: built-in RTC with manual and automatic synchronization
 Power options: PoE support and power-off memory protection
 Protection feature: watchdog
 Exit button support: yes
 Operating temperature range: -30 to 60 °C
 Dimensions: 210 × 50 × 106 mm
How to use
Mount the bare unit in an appropriate enclosure or control cabinet and connect power (12 V) and communication lines according to installation guidelines. Integrate card readers via RS-485 or Wiegand interfaces and configure network settings for TCP/IP communication if remote management is required. Use the controller’s management software or compatible access control platform to import users, set door schedules, configure interlock and anti-passback rules, and define alarm thresholds. Ensure PoE is available if powering the device over Ethernet.
Usage recommendations
Install the controller in a ventilated, secure cabinet and follow local electrical codes. Regularly back up configuration and logs, apply firmware updates via the online upgrade feature, and verify time synchronization to maintain accurate event records.

## 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 ASC2204B-S 4-door door controller cost, and is it available for purchase?

The price is 284.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 Monday 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: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can DAHUA ASC2204B-S 4-door 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 ASC2204B-S 4-door 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/11683171/67021495_large.webp