CONTROLLER
PRODUCT TYPE
KJ CONTROLLER
KJ series – Access Control Panel
- KJ2X – 2 door ACU
- KJ4X – 4 door ACU
- KJ8X – 8 door ACU

1. Scalable & Modular IP-Based Architecture
KJ Series Access Control Panels are available in 2, 4, and 8-door models, offering a modular and highly scalable IP-based design. This architecture enables seamless deployment from small-scale facilities to large enterprise environments, ensuring a future-proof solution that grows with your business.
2. Embedded Web Server & Real TCP/IP Communication
Built-in web-based management interface allows browser-based configuration and monitoring without requiring separate software. True TCP/IP architecture ensures fast, secure data transmission across networks and simplifies system deployment and maintenance.
3. Plug & Play Auto-Configuration
Devices are automatically detected and initialized upon network connection, enabling hassle-free installation and minimizing configuration errors or delays on-site.
4. Enterprise-Level Security & Redundancy
Designed with RS-485 redundancy and advanced system fault detection, the KJ Series supports real-time monitoring of events such as tamper alerts, power loss, fire signals, and low battery-ensuring uninterrupted access control and mission-critical system reliability.
5. Broad Device Compatibility & Multimodal Credential Support
Supports a wide array of authentication technologies including biometric readers (facial, fingerprint, vein), RFID cards, BLE/NFC mobile credentials, and PINs, ensuring maximum flexibility for diverse user environments.
6. Unified Software Integration – Guardian Essential Platform
Seamlessly integrates with the Guardian Essential platform, enabling unified management of access control, time & attendance, visitor tracking, meal management, and real-time graphic map monitoring. Compatible with EMSTONE VMS for comprehensive video-event linkage.
7. End-to-End Encrypted Communication
Applies AES 256-bit and SEED 128-bit encryption across all communication channels to meet global security standards such as GDPR, ISO/IEC 27001, and local data protection regulations.
8. Advanced Logic & Global Anti-Passback
Supports comprehensive rule sets, including Duress Mode, Two-Person Rule, Global Anti-Passback, Global Input/Output Triggers, and partitioned arming/disarming zones—tailored for high-security sectors.
9. Pre-Assembled Industrial-Grade Panel Housing
Comes with a rugged NEMA-rated enclosure with integrated dual-power supply, battery backup support, and heat dissipation vents for reliable field deployment and easy installation.
10. Field-Proven Reliability Across Sectors
Extensively deployed in government facilities, international airports, hospitals, and large enterprises, the KJ Series has a proven track record for performance, durability, and operational stability under demanding conditions.
DATASHEET
Category | KJ2X | KJ4X | KJ8X |
CPU | 32Bit ARM9 Single Processor | 32Bit ARM9 / 8bit AVR Processor | 32Bit ARM9 |
Memory | 64M SDRAM 32M CODE/DATA Flash | 64M SDRAM 32M CODE/DATA Flash | 64M SDRAM 32M CODE/DATA Flash |
Operating System | Embedded Linux | ||
Reader Ports | 2 (include LED/Beep Control Port) | 4 (include LED/Beep Control Port) | 8 (include LED/Beep Control Port) |
Input Ports | 8 inputs – 4 status inputs, – 4 set inputs (Power Fail, Low battery Tamper, Fire alarm) | 12 inputs – 8 port inputs(four status support) – 4 set inputs (Power Fail, Low battery, Tamper, Fire Alarm) | 20 ports – 16 port inputs(four status support) – 4 set inputs (Power Fail, Low battery, Tamper, Fire Alarm) |
Output Ports | 2(Form-C Relay), 5(Ext LED output) | 8(Form-C Relay), 5(Ext LED output) | 8(Form-C Relay), 5(Ext LED output) |
Network | 100MB On board Ethernet TCP/IP | ||
RS485 | 1 | 1 | 2 |
Dimension (mm*mm) | 150*200*25 | 142*158*25 D4X_N2 195*200*35 | 240*180*25 |
Operating Temperature | 0~75℃ | 0~75℃ | 0~75℃ |
Relative Humidity | 10 ~ 80% | 10 ~ 80% | 10 ~ 80% |
Power Consumption | MAX 2A/12V | MAX 2A/12V | MAX 2A/12V |
Users | 100,000 | 200,000 | 200,000 |
Event Buffers | 50,000 | 50,000 | 50,000 |
Time Schedule | 256 Time schedule index (includes 3 holidays) 256 Holiday index | ||
Global Anti Pass Back | Supported | Supported | Supported |
Global input/output trigger | Supported | Supported | Supported |
Hardware & Software Arm/Disarm | Supported | Supported | Supported |
Embedded Web | Supported | Supported | Supported |
Certificate | KC, FCC, CE, RoHS | KC, FCC, CE, RoHS | KC, FCC, CE, RoHS |
Package | K2X pack 350 x 450 x 100mm * Included Items : Nema Case, Power Supply(12V 12AMP), NFB Switch, LED indicator (power, RX, TX) | K4X pack 350 x 450 x 100mm * Included Items : Nema Case, Power Supply(12V 12AMP), NFB Switch, LED indicator (power, RX, TX) | K8X pack 400 x 500 x 100mm / * Included Items : Nema Case, Power Supply(12V 12AMP+12V 4AMP), NFB Switch, LED indicator (power, RX, TX) |
Product Specifications Disclaimer:
Specifications are subject to change without prior notice as a result of ongoing product innovation, component availability, and technological advancements. KJ TECH reserves the right to modify product features to maintain quality standards and optimize performance.
SYSTEM CONFIGURATION

• Optimized Data Transmission Protocol :
High-speed, reliable communication achieved via multi-packet data transmission and reception technology.
• Hierarchical Access Level Management :
Enhances utility and system control through flexible access level settings for users and zones.
• Advanced Input Monitoring :
Supports 4-channel status input (open loop, shorted loop, grounded loop, line fault), ensuring accurate real-time monitoring.
• Event-Based Input Configuration :
Input ports can be customized to monitor key events such as power failure, low battery, tampering, or fire.
• Wiegand Format Auto-Recognition :
Automatically detects and supports 26, 34, 37, and 40-bit Wiegand data formats.
• Custom Reader Format Settings :
User-defined formats supported for seamless integration with third-party devices.
• Comprehensive Anti-Passback Support :
Implements Global, Timed, and Soft Anti-Passback modes for enhanced security control.
• Automatic Power Fault Protection :
Integrated reverse-voltage protection mechanism ensures stable DC power management.
• LED Status Indicators :
Onboard LEDs display real-time system status for CPU, communication, input, and output states.
• Noise Immunity Circuitry :
Designed with electric noise filtering components to ensure system stability in harsh environments.
• Pluggable Terminal Blocks :
Supports efficient and error-free wiring for quick installation and serviceability.
Benefits of Using Controller Package
1.Protection
Control Panel is protected from the dangers from outside (environmental factor such as dust, water etc., and manipulation by unauthorized person). IDTECK enclosure is NEMA (National Electric Manufacturer’s Association) standard followed Case, and it provides “Durability”, “Dependability” and “Cost Effectiveness”. IDTECK manufactures high quality environmentally rated electrical enclosures manufactured from powder coated carbon steel, 5052 Aluminum and 304 or 316L Stainless Steel.
If the installer make a mistake in the wiring of control board, the control board can be broken by electricity shortage. But if you use [package], NFB switch in the package shut the electricity in case the installer make a mistake in wiring and protect the control board from the electricity shortage.
2. Easy Installation & Maintenance
While you install the device and make the wiring, package will reduce your frustration and make you satisfied for its easy and simple installation and maintenance.
3. Stable Power Supply & battery connection ready (※ battery should be added by the user)
4. Alarm Event Alert- in case the [Nema Case] is opened by force
Tamper switch is installed on the case, and there’s alarm event if the case is opened by force by unauthorized person.
5. Alarm Event Alert- in case AC power failed
In case the Battery is connected, the power supply is automatically changed to battery.
※ battery’s life can be different by the event numbers, usually it provides 2~6hours life.
※ alarm event is occurred in case the battery gets down to “Low Voltage”.

