Access Controller Supports 4 door control. It can extend up to 62 DS-K2M002X access modules, and up to 128 doors can be controlled Downstream RS-485 redundancy wiring design to ensure communication stability. 5-ch downlink RS-485 interface supports two applications: 1. When 4-ch RS-485 communication, the 5th RS-485 can be used as a redundant application; 2. 4-ch RS-485 forms 2 groups of dual-bus loops with physical isolation. It is recommended that you do not have more than 16 access modules attached to each loop bus. Web configuration management. All configurations can be realized via web without software application Supports professional access control applications such as multi-door interlocking and anti-passback Supports backup battery access. Charging and discharging are available It has status indicators such as power supply, communication and operation, which is convenient for equipment health detection Datasheet System Parameters Network Wired Network: 1, 10/100/1000 Mbps self-adaptive Interface Network Interface: 1 Lock Control: 4 Exit Button: 4 Door Contact Input: 4 Alarm Input: 8 Alarm Output: 4 Tamper: 1 RS-485: 7 2 for card reader 5 for access modules (4 for communication, each interface can connect up to 16 access modules; 1 for redundancy) Wiegand: 4 (standard 26/34 input, supports custom Wiegand settings) USB: 1 (USB 2.0) Fire Interface: 1 Capacity User Capacity: 100,000 Fingerprint Capacity: 10,000 Card Capacity: 200,000 Event Capacity: 600,000 Linked Door Capacity: Self: 4 doors Extended: Up to 128 doors (connected with 62 access modules) Linked Card Reader Capacity: 8 RS-485 card readers (OSDP protocol) 4 Wiegand card readers Authentication Fingerprint Recognition Duration: < 1 s General Indicator: 12 indicators 1 for power status 1 for running status 1 for wired network status 5 for RS-485 status 4 for door status Battery: Charge and discharge Power Supply: 12 ± 15% VDC Power Consumption: ≤ 102 W Working Temperature: -10 °C to 55 °C (14 °F to 131 °F) Working Humidity: 0% to 90% (Non-condensing) Installation: Installation with guide rail Language Support English, Thai, Traditional Chinese, Indonesian, Vietnamese, Arabic, Spanish (Europe), Spanish (South America), Italian, French, Dutch, Russian, Ukrainian, Portuguese (Europe), Portuguese (Brazil), Serbian, Croatian, Bulgarian, German, Greek, Romanian Functionality Configuration via Web Browser: Supported Multi-Factor Authentication: Supported First Person In: Supported Anti-Passback: Supported (32 routes, 64 card readers each) Multi-Door Interlocking: Supported (32 groups, 32 doors each)