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Dahua Technology DHI-ASC1204B RJ45 Four-Door Access Controller Security Accessory



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Key Features


  • Type: Four-Door Access Controller
  • Operation Temperature: -22 to 140°F (-30 to 60°C)

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Dahua Technology DHI-ASC1204B RJ45 Four-Door Access Controller Security Accessory

Set up a full-fledged access control system with the DHI-ASC1204B RJ45 Four-Door Access Controller from Dahua Technology. This controller enables you to combine up to four card/fingerprint readers, four electronic locks, four door sensors, four exit buttons, and various alarm functions into an integrated computer-managed system (readers, locks, sensors, exit buttons, and alarm devices available separately). It communicates with your readers via its Wiegand and RS-485 interfaces, and with your computer system via TCP/IP RJ45 . With a storage capacity of 16MB, the controller can recognize up to 100,000 card holders, and can store up to 150,000 event records.

The controller can be configured to grant access to your premises based on card, password, or fingerprint, or a combination of these three credentials. Its alarm interface allows for integration with door time-out, intrusion, duress, and tamper alarms. Other functions include anti-passback for a stricter level of access control, multi-door interlock for preventing unwanted passage from one area to another, and multi-card open for special situations in which a door should only unlock after consecutive verification of several individuals. The controller supports 128 groups of schedules for allowing access to sets of employees only at specific times of the day, and 128 groups of holiday schedules. The access controller is designed to be surface mounted.

  • Removable terminal blocks support ease of wiring
  • Scalable up to 64 four-door controllers managed by SmartPSS
  • Supports controlled lock down of all connected access doors
  • Easily integrate biometrics to secure sensitive locations
  • Enable anti-passback and multi-door interlock to control traffic in high security applications


Dahua Technology DHI-ASC1204B Specs


Main Processor32-bit
Memory16 MB (32 MB external)


Inputs4 x door sensors
4 x exit buttons
1 x alarm
Outputs4 x door locks
1 x alarm


Card Holders100,000
Maximum Events Supported150,000


User ManagementGeneral, VIP, guest, patrol, black list, duress
Alarm FunctionDoor time-out
Schedule SettingSchedule: 128 groups
Period: 128 groups
Holiday: 128 groups


PC CompatibilityRJ45 (10/100 Mbps)


SafetyEN 60950:2006+A2:2013
Conforms to UL standards
Electromagnetic CompatibilityFCC CFR 47 part 15 subpart B
EN 55022:2010/AC:2011 (class B)
EN 55024:2010, EN 50130-4:2011, EN 61000-6-3:2007/A1:2011, EN 61000-3-2:2006+A1:2009+A2:2009, EN 61000-3-3:2013, IEC 61000-4-2:2008, IEC 61000-4-3:2006+A1:2007, IEC 61000-4-4:2012, IEC 61000-4-5:2005, IEC 61000-4-6:2008, IEC 61000-4-8:2009, IEC 61000-4-11:2004

Operational Features

Power Supply9 to 15 VDC, 500 mA
Operation Temperature-22 to 140°F (-30 to 60°C)


Dimensions8.2 x 4.6 x 2.0″ (20.9 x 11.6 x 5.1 cm)
Weight1.1 lb (0.5 kg)
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