Brand originChina
Support Ending
Support Ending
Dahua ASC4204B-S
Category
Controller
First seen by Awernica
Oct 2026
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Software Support
2028-06-01
2 years left
Replacement
Not specified
No verified replacement
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Specifications
From the manufacturer's product information.
System
- Main Processor
- Embedded Processor
- Network Protocol
- IPv4;UDP;P2P;IPv6;TCP
- OSDP Protocol
- Yes
- Interoperability
- ONVIF PROFILE C
- SDK
- Yes
- API
- Yes
Basic
- Product Type
- Controller
- Buzzer
- Yes
- Casing Material
- PC+ABS
Function
- Verification Method
- Card;Password;Fingerprint;Remote;QR Code
- Period List
- 128 groups
- Holiday Period
- 128 groups
- Network Update
- Yes
- First User Unlock
- Yes
- Remote Verification
- Yes
- Restricted List/Trusted List
- Yes
- Peripheral Card Reader
- Supports 4-channel RS-485 card readers and 4-channel Wiegand card readers.
- Multi-door Interlock
- Yes
- Multi-user Authentication
- Yes
- Real-time Monitoring
- Yes
- Multi-factor Authentication
- Yes
- Web Configuration
- Yes
- Unidirectional or Bidirectional
- Unidirectional
User
- User (Card) Type
- General user, VIP user, patrol user, guest user, blocklist user, other users, custom user 1 and custom user 2
Capacity
- User Capacity
- 100,000
- Fingerprint Capacity
- 10,000
- Card Capacity
- 100,000
- Record Capacity
- 500,000
Port
- RS-485
- 5 ports. 4 for card readers, and the remaining 1 is for the extension port.
- Wiegand
- 4-channel input
- Network Port
- 1 RJ-45, 10 Mbps/100 Mbps self-adaptive
- Alarm Input
- 1 channel; expandable to 8 channels when connected to an external alarm module.
- Alarm Output
- 1 channel; expandable to 8 channels when connected to an external alarm module.
- Alarm Linkage
- Yes
- Exit Button
- 4 channels
- Door Status Detection
- 4 channels
- Lock Control
- 4 channels
Alarm
- Anti-pass Back
- Yes
- Tamper Alarm
- Yes
- Duress Alarm
- Yes
- Door Sensor Timeout
- Yes
- Intrusion
- Yes
- Illegal Card Exceeding Threshold
- Yes
- Duress Fingerprint
- Yes
General
- Power Supply
- Standard PoE;; 12 VDC 1A （no peripheral devices）
- Power Consumption
- ≤ 3 W; it might alter if other devices are connected
- Product Dimensions
- 210.0 mm × 106.0 mm × 34.1 mm (8.27" × 4.17" × 1.34") (L × W × H)
- Packaging Dimensions
- 255 mm × 166 mm × 87 mm (10.04" × 6.54" × 3.43") (L × W × H, 1 in inner carton); 512 mm × 269 mm × 196 mm (20.16" × 10.59" × 7.72") (L × W × H, carton)
- Operating Temperature
- –30 °C to +60 °C (–22 °F to +140 °F)
- Operating Humidity
- 5%–95% (RH), non-condensing
- Operating Environment
- Indoor
- Gross Weight
- 0.54 kg (1.19 lb)
- Installation
- Surface Mount;Guide Rail Mount
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