Defender B/K

The TRES DEFENDER Dual Relay Access Controller is a robust and versatile security solution, featuring weatherproof construction, comprehensive storage capacity, and seamless network integration. Offering flexible configuration and compatibility with standard access protocols, it is designed for reliable, high-capacity access control across a range of demanding environments.


  • TRES-100-Defender-B/K: Base Kit (TO BE DISCONTINUED)

Defender B/K Overview

Everything you love about the Defender Dual Relay Access Controller, housed in an IP65 Enclosure.

Experience power, convenience, and security with the EMX Defender Dual Relay Access Controller. This high-volume traffic control tool is perfect for gated communities, private security estates, and commercial properties.

  • Simultaneous Management of Gates: Simultaneously manage separate vehicle and pedestrian gates for seamless traffic flow.
  • Robust User Capacity: Supports up to 20,000 users with an audit trail, offering a scalable solution that grows with your community or property.
  • Distributed Database Controller: Boasts both online and offline capabilities, allowing you to maintain effective access control even during network disruptions.
  • Remote Door Release Function: The added convenience of managing access remotely, enhancing overall system control and ease of use.
  • Real-Time Processing and Communications: Guarantees immediate response and efficient handling of access requests with real-time capabilities, ensuring access decisions are based on the most current data.

The EMX Defender Dual Relay Access Controller is more than just an access control solution. It’s a comprehensive, user-friendly system that enhances security while providing the scalability and reliability needed for large-scale applications. Experience the convenience and control of the Defender Dual Relay Access Controller today.


Features of Our TRES DEFENDER Dual Relay Access Controller

  • Efficient and versatile with 4 reader ports (2 in, 2 out)
  • Large user memory capacity handling up to 20,000 users
  • Equipped with standard 26-bit Wiegand input protocol
  • 2 NO/NC Relays and 2 NO request to exit inputs for flexible configuration
  • Integrated diagnostic LED indicators for clear system status visualization
  • Buffering capacity for 100,000 events for efficient operation

The DEFENDER Dual Relay Access Controller excels with its:

  • Sturdy and secure design: weatherproof and lockable enclosure
  • Compact dimensions: (L)6.3″ x (W)4.2″ (160mm x 106mm), perfect for various installations
  • Consistent performance ensured by a 12VDC @ 3A power supply
  • Reader compatibility with all types using standard 26-bit Wiegand format
  • Operational durability in environments from -31° F to +149° F (-35° C to +65° C) and 10 ~ 90% relative humidity
  • Built-in TCP/IP network communications for seamless integration into modern networks

The DEFENDER Dual Relay Access Controller combines robust functionality with practical design for effective access control. With a broad range of features, it is truly a comprehensive solution for managing access in varied environments.


Defender B/K Specs

Enclosure Weatherproof, lockable, IP65 rated with clear hinged lexan cover. Internal hinged swing-out plate for easy access and wiring
Dimensions 11.8″ X 7.9″ X 6.7” (300mm x 200mm x 170mm)
Basic Functions Reader Ports: 4 (2 in, 2 out), Input protocol: Standard 26-bit Wiegand, Maximum Wiegand device distance: 500′
Outputs 2 NO/NC Relays @ 1 OA (software configurable)
Request to Exit Inputs 2 NO
Status Inputs 2 NC
Diagnostic LED Indicators Power, System, Inputs, Output relays
Storage Memory – 20,000 Users, Buffers – 100,000 Events
Network Communications TCP/IP
Software Included Downloadable @
Communication Distances Ethernet TCP/IP 328′ (100 meters)
Storage Capacities No limit on number of networks
Communications Mode 10 Mbps/100Mbps adaptive
Power Supply (Included) 12VDC @ 3A (If using magnetic door locks)
Circuit Board Power 225 mA (without load)
Removable Terminal Strips For easy install and service
Reader Type Supported Compatible with all readers using standard 26-bit Wiegand format
Operating Environment -31° F to +149° F (-35° C to +65° C), 10 ~ 90% Relative humidity (non-condensing)
Dimensions – PCB Only (L)6.3″ x (W)4.2″ (160mm x 106mm)

Spec Sheet


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