- Usually Ships 4 to 7 Business Days
EMX
EMX Quad Relay Access Control Board
- Usually Ships 4 to 7 Business Days
- brand-name:
- EMX
- brand-url:
- /brand/emx/
- availability:
- available
Product Description
EMX Defender Quad Relay Access Controller — Pro Installer Edition
Built for gate installers, low-voltage contractors, and access control integrators, the EMX Defender Quad Relay Access Controller delivers fast installs, clean wiring, and rock-solid performance on residential, commercial, and HOA jobs. Choose the configuration from the dropdown: Defender 400 (board only) or Defender with IP65 weatherproof enclosure.
Why Installers Choose Defender
- Two-in, two-out reader architecture for smooth vehicle/pedestrian flow without extra controllers
- Online + offline operation (distributed database) keeps gates moving during network hiccups
- 20,000 users + 100,000 event buffer to scale from single sites to busy multi-tenant properties
- Remote door/gate release and real-time TCP/IP comms for fewer rollbacks and easier service
- Integrated diagnostic LEDs on power/system/inputs/outputs to slash troubleshooting time
- Standard 26-bit Wiegand for broad reader compatibility and easy upgrades
Installer-Centric Features
- 4 SPDT output relays (N/O–COM–N/C) for strikes, mag locks, and operator triggers
- 4 Request-to-Exit (REX) inputs for push-buttons, motion sensors, loops, etc.
- Removable terminal blocks for quick swaps and cleaner panel work
- 328 ft controller-to-controller over network (site dependent); up to 500 ft Wiegand device distance
- 12VDC @ 3A recommended when driving magnetic locks
Configuration Options
Defender 400 — Board Only
- PCB: 6.3" × 4.2" (160 × 106 mm); low idle draw <100 mA (≈225 mA during TCP comms, no load)
- Drop into existing cabinets or custom panels
Defender with IP65 Enclosure
- Weatherproof, lockable, IP65 cabinet with clear hinged Lexan cover
- Hinged swing-out backplate for easy wiring, labeling, and service
- Cabinet: 11.8" × 7.9" × 6.7" (300 × 200 × 170 mm); weight: 4.2 lb
- Ideal for gate posts, outdoor pads, and retrofit jobs
Technical Specs
| Network | TCP/IP, 10/100 Mbps adaptive |
| Readers | Up to 4 (2 in / 2 out), 26-bit Wiegand |
| Control | Up to 4 gates/doors (quad SPDT relays, software configurable) |
| REX Inputs | 4 (push-button, motion, etc.) |
| Door Position | N/C or reed switch |
| User Memory | 20,000 users |
| Event Buffer | 100,000 events |
| Power | 12VDC @ 3A (recommended with mag locks) |
| Consumption | <100 mA idle; ~225 mA TCP (no load) |
| Distances | Controller-to-controller up to 328 ft (network dependent); Wiegand devices up to 500 ft |
| Environment | −32°F to 149°F (−35°C to 65°C); 10–90% RH non-condensing |
| Software | Included |
| Terminations | Removable terminal strips |
| PCB Size | 6.3" × 4.2" (160 × 106 mm) |
| Enclosure | IP65, lockable, clear hinged cover, swing-out plate |
Typical Jobs
- HOA vehicle gate + pedestrian gate with shared credentialing
- Commercial roll-up doors and mag-locked man-doors
- Parking lots, storage yards, and perimeter gates
- Retrofits replacing legacy 26-bit panels
Install fast. Reduce callbacks. Standardize your truck stock. Select Defender 400 (board only) or Defender with IP65 enclosure from the dropdown to configure your order.
