ASC2204C-S access controller for 4 doors
The ASC2204C-S is a Dahua access controller for 4 doors (one-way). The controller is the core of the access system: the card readers and door locks connect to it, and the controller determines who may open which door, and when. It connects to the network via TCP/IP and can be managed with DSS Pro or SmartPSS Lite. This version controls 4 doors one-way; the same controller in a two-way version for 2 doors is the ASC2202C-D.
This controller and the other version
Both versions are the same controller with the same capacity and connections. They differ in the door layout:
| Type | Doors | Readers | Power supply |
|---|---|---|---|
| ASC2202C-D | 2 doors (two-way) | 4 | 100-240 V AC |
| ASC2204C-S (this one) | 4 doors (one-way) | 4 | 100-240 V AC |
What this controller does
- Controls 4 doors (one-way); card readers connect via RS-485 and Wiegand
- Determines per person and per time period who may open which door; supports interlock, anti-passback and unlocking with multiple people
- Alarm for a tampered reader, a break-in or a door held open for too long
- Network via TCP/IP, manageable with DSS Pro or SmartPSS Lite; powered via 100-240 V AC
- Built-in clock and memory that is retained during a power failure; surface mounting
The details at a glance
| Access | |
| Type | Access controller, 4 doors (one-way) |
| Readers | 4x RS-485 and 4x Wiegand |
| Door functions | Interlock, multi-user, anti-passback, time periods |
| Capacity | |
| Users | 100.000 |
| Log entries | 500.000 |
| Inputs and outputs | |
| Alarm inputs | 6 |
| Relay outputs | 4 |
| Alarms | Reader tamper, intrusion, door open too long |
| Clock | Built-in RTC, automatic time sync |
| Network and power | |
| Network | 1x 10/100 Mbps ethernet (TCP/IP) |
| Power supply | 100-240 V AC |
| Consumption | Max. 39,6 W |
| Memory | Retained during a power failure |
| Size | |
| Dimensions | 337 x 272 x 90 mm |
| Operating temperature | -30 to +60 degrees |
| Mounting | Surface-mount |
| Model code | DHI-ASC2204C-S |
The full specification can be found in the Dahua datasheet, under the Downloads tab.
Frequently asked questions
What exactly does an access controller do?
The controller is the brain behind the door. The card readers and door locks connect to it; the controller checks the card or code, decides whether the door may open and operates the lock. It also records who went in and when.
Is a reader included, or do I need to buy one separately?
A reader is not included: you choose it separately and connect it via RS-485 or Wiegand. The ASR card readers in this category are compatible. Tell us about your situation and we will put together the right combination.
How many doors can I connect to this?
This version is for 4 doors (one-way). If you need more, you can use several controllers on the network or choose a larger one. Call or email us and we will work it out with you.
How is the controller powered?
Mains powered (100-240 V AC); the controller has a built-in power supply.
What do I use to manage users and permissions?
To manage cards, people and permissions, you use Dahua's free software: SmartPSS Lite for a small installation, DSS Pro for larger ones.
Where do I mount the controller?
In a locked room within the secured zone, with surface mounting. Keep the reader cabling separate from mains power.
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