eSSL C3-400 System & Hardware Compatibility

The eSSL C3-400 multi-door access control panel is engineered for physical security environments requiring centralized hardware interfacing across up to 4 doors simultaneously. Built with an open-protocol hardware framework, the controller connects directly with third-party credential readers, locking hardware, request-to-exit buttons, environmental sensors, and building safety equipment through dedicated on-board terminal blocks.

Credential Reader and Interface Compatibility

The C3-400 architecture supports up to 12 readers in total, allowing multi-point ingress and egress monitoring across all four controlled doors. The controller provides native connection channels for:

• 26-bit Wiegand Readers: Direct terminal connection for up to 4 industry-standard 26-bit Wiegand readers (with other bit formats available upon request). Compatible reader technologies include standard 125 kHz proximity, 13.56 MHz MIFARE, and HID-compatible RFID credential readers.
• RS-485 Readers: Dedicated serial multidrop bus supporting up to 8 RS-485 series access control readers for extended wiring runs and bi-directional reader communication.

Electric Lock and Output Relay Interfacing

The controller integrates 8 physical relay outputs configured as Form-C dry contact relays (normally open and normally closed options):

• Door Lock Relays (4 Outputs): Four dedicated Form-C relays control electronic door hardware across 4 doors. These outputs interface directly with electronic strikes, electromagnetic locks (maglocks), drop bolts, and motorized turnstile release mechanisms.
• Auxiliary Form-C Relays (4 Outputs): Four programmable auxiliary Form-C relays switch auxiliary peripherals. These contacts integrate with external alarm sirens, visual strobe beacons, CCTV camera recording trigger inputs, and automated doorbells.

Sensor, Exit, and Safety Input Integration

The C3-400 includes 12 dedicated discrete inputs engineered to accept dry contact signals from field devices:

• Exit Device Inputs (4 Inputs): Connect directly to push-to-exit buttons, wave-to-open sensors, or mechanical exit switches across all 4 entry points.
• Door Status Inputs (4 Inputs): Interface with door position switches and magnetic door contacts to provide real-time door open, closed, or forced-door feedback.
• Auxiliary Inputs (4 Inputs): Dedicated auxiliary channels accept inputs from building safety and intrusion devices, including smoke detectors, fire alarm control panels (FACP) for emergency release logic, and infrared body detectors or PIR motion sensors.

Network, Controller Logic, and Power Specifications

The system communicates over standard local area networks using an integrated RJ-45 TCP/IP Ethernet interface for browser-based access and centralized server configuration. It also features RS-485 serial communication channels and optional Wi-Fi support. The board's 32-bit 400 MHz processor, 32 MB RAM, and 128 MB flash memory support advanced standalone operational modes including anti-passback, multi-door interlocking, multi-card unlocking, and duress alarm handling for up to 30,000 cardholders and 100,000 transaction events. Power compatibility requires a DC input between 9.6V and 14.4V (rated maximum current of 1A), with a recommended power supply rating of 12V DC, 1.5A.

Hardware Compatibility Matrix