eSSL C3 400 4 Door Access Controller

KTI010050014DAC

Product Description

The eSSL C3-400 is an enterprise-grade 4-door physical access control panel designed for centralised network security management.

Make/Brand: eSSL
Model: C3-400
Doors Controlled: 4 Doors
Reader Capacity: Up to 12 readers (8 RS-485 readers or 4 26-bit Wiegand readers)
Cardholder Capacity: 30,000 users
Event Buffer: 100,000 log events
Dedicated Inputs: 12 (4 Exit Devices, 4 Door Status Sensors, 4 Auxiliary Inputs)
Relay Outputs: 8 (4 Form-C Lock Relays, 4 Form-C Auxiliary Relays)
Hardware Architecture: 32-bit 400 MHz CPU, 32 MB RAM, 128 MB Flash Memory
Communication Interfaces: TCP/IP, RS-485, optional Wi-Fi
Operating Voltage: DC 9.6V to 14.4V (Rated Max 1A; Recommended: 12V DC, 1.5A)
Enclosure: Powder-coated aluminium wall-mount box
Operating Temperature & Humidity: 0°C to 55°C; 10% to 80% RH (non-condensing)
Dimensions: 380 mm (L) × 80 mm (W) × 280 mm (H) (Bundle)
Weight: 3.55 kg

KTI010050014DAC

Price

₹ 15,106.50 excl. GST

+ 18.00% GST. Freight after pincode at cart.

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Product Details
Available Brands	Essl
Unit	Numbers
HSN Code	85437099
Weight	3.55 kg
Dimension	L 38 x W 8 x H 28 cm cm ft in m
Warranty	12 Months No-Onsite Warranty
Tags/categories	Automation Access Control, Attendance System Multi Door Controller

Usually dispatched within 7 days

About this product .

The eSSL C3-400 is an advanced multi-door physical access control panel engineered to regulate up to four separate doors simultaneously. It provides centralized control across corporate, commercial, and industrial facilities, streamlining wiring and administration by housing multiple door controls within a unified controller chassis.
Equipped with a high-performance 32-bit 400 MHz processor, 32 MB of system RAM, and 128 MB of flash memory, the C3-400 efficiently manages substantial access loads. The on-board storage supports up to 30,000 individual cardholder records and retains an internal buffer of up to 100,000 transaction event logs for thorough operational auditing.
The controller features extensive input and output architecture, comprising 12 dedicated inputs and 8 relay outputs. The inputs accommodate 4 exit devices, 4 door status magnetic sensors, and 4 auxiliary inputs, while the outputs deliver 4 Form-C relays for electronic door locks and 4 Form-C auxiliary relays for peripheral equipment.
Versatile reader compatibility allows the C3-400 to support up to 12 readers, connecting either 8 RS-485 readers or 4 industry-standard 26-bit Wiegand RFID readers. Network communication is handled through integrated TCP/IP Ethernet and RS-485 interfaces, facilitating real-time server synchronisation and browser-based configuration management.
For heightened security environments, the controller supports sophisticated operational modes including anti-passback protection, multi-card verification opening, door interlocking, and duress alarm triggers. Auxiliary I/O ports seamlessly link with smoke detectors, fire alarms, sirens, and CCTV systems to initiate emergency lockdowns or evacuations.
Housed in a rugged powder-coated aluminium enclosure intended for secure wall mounting, the unit operates across a wide DC 9.6V to 14.4V voltage range with a recommended 12V DC, 1.5A supply. The hardware performs reliably within ambient temperatures ranging from 0°C to 55°C and relative humidity levels between 10% and 80% non-condensing.

Product Information .

Corporate Offices Worship Places Industries, Factories Hospitals, Clinics Shopping Malls, Showrooms Government Buildings, Offices Banks Airports Railways, Bus Stations Conference Rooms Resorts Smart Cities Defense Sectors Power Plants Embassy Server Rooms Pharma Industries Auditorium Conference Hall Emergency Services

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

Interface Channel	Port Quantity	Electrical Standard	Compatible Field Equipment
Reader Ports	Up to 12 Readers	26-bit Wiegand / RS-485	Proximity, MIFARE, HID-compatible, and RS-485 readers
Lock Relay Outputs	4 Form-C Relays	Dry Contact Form-C	Electromagnetic locks, electric strikes, drop bolts
Auxiliary Relay Outputs	4 Form-C Relays	Dry Contact Form-C	Alarm sounders, strobe lights, CCTV triggers, doorbells
Exit Inputs	4 Dedicated Inputs	Dry Contact Loop	Request-to-exit buttons, egress push pads
Door Sense Inputs	4 Dedicated Inputs	Dry Contact Loop	Magnetic door position switches, reed switches
Auxiliary Sensor Inputs	4 Dedicated Inputs	Dry Contact Loop	Smoke detectors, fire alarm panels, infrared detectors
Host Communications	Ethernet / Serial	TCP/IP, RS-485, Optional Wi-Fi	Network switches, server management software, serial buses

eSSL C3-400 Multi-Door Controller Installation and Wiring Guide

The eSSL C3-400 multi-door access control panel is engineered for physical security deployments managing up to 4 doors simultaneously. Proper field installation requires attention to mechanical mounting, electrical line sizing, credential reader transmission topology, and network communication parameters.

Cabinet Mounting and Environmental Considerations

The controller bundle is supplied housed inside a powder-coated aluminium enclosure weighing 3.55 kg (7.8 lbs), with exterior dimensions of 380 mm (L) × 80 mm (W) × 280 mm (H) (15 in. × 3.15 in. × 11 in.). The bare printed circuit board measures 160 mm × 106 mm (6.3 in. × 4.17 in.). The enclosure is designed for wall mount installation in clean, dry environments such as dedicated telecom or security equipment rooms.

Ensure the installation site complies with the unit's operating temperature limits of 0°C to 55°C and relative humidity levels between 10% and 80% (non-condensing). Maintain adequate perimeter clearance around the aluminium cabinet to allow clean conduit entry, heat dissipation, and maintenance access.

Power Supply Requirements

The eSSL C3-400 controller operates across a DC voltage range of 9.6V to 14.4V with a rated maximum consumption of 1A. A dedicated 12V DC, 1.5A regulated power supply is recommended to ensure system stability under full load. During commissioning and periodic maintenance, measure the input voltage directly across the controller's power terminals to confirm it remains consistently within the required 9.6V to 14.4V DC operating window.

Reader Wiring and Credential Interfaces

The board architecture supports up to 12 readers in total, configured as either 8 RS-485 readers or 4 standard 26-bit Wiegand readers:

Wiegand Readers: Compatible with 26-bit Wiegand protocols (including proximity, MIFARE, and HID formats). Connect Data 0, Data 1, power, and ground leads to the corresponding onboard terminal blocks for up to 4 entry points.
RS-485 Readers: Up to 8 RS-485 readers can be integrated along the serial bus. Ensure correct A/B differential polarity and assign distinct hardware addresses to each reader to prevent bus collision.

Terminal Input and Relay Output Connections

The C3-400 is equipped with 12 onboard inputs and 8 Form-C relay outputs arranged via pluggable screw terminals:

Input Terminals (12 total): Provides dedicated terminals for 4 request-to-exit (RTE) devices, 4 door status sensors (door contacts), and 4 auxiliary inputs. Auxiliary inputs connect directly to third-party dry contacts from fire alarm systems, smoke detectors, or infrared motion sensors.
Output Terminals (8 total): Contains 4 Form-C relays designated for fail-safe or fail-secure electronic door locks, alongside 4 Form-C auxiliary relays. Auxiliary relays can be configured to actuate external sirens, strobe lights, CCTV recording triggers, or doorbells upon alarm events.

Network Commissioning and Interface Diagnostics

For configuration, data synchronization, and browser-based management, connect the controller to the local area network using the standard onboard RJ-45 TCP/IP interface. An RS-485 multidrop interface is also available for serial network integration, along with optional Wi-Fi support. Common communication faults during initial setup stem from IP subnet mismatches between the controller and host server, or inverted polarity and duplicate addressing along the RS-485 bus.

eSSL C3-400 Hardware and System Diagnostic Guide

Deploying and maintaining the eSSL C3-400 4-door access control panel requires systematic isolation of power distribution, field wiring, data bus connectivity, and logic configuration. When addressing operational anomalies on-site, use the technical verification steps outlined below to resolve hardware and communication faults.

Power Supply and Voltage Drop Isolation

The eSSL C3-400 requires an operating DC voltage between 9.6V and 14.4V, with an internal current rating of 1A maximum. A dedicated 12V DC, 1.5A power supply is recommended for the main board.

Symptom: Panel reboots unexpectedly or drops offline during card reads or lock releases. Measure the DC terminal voltage under full load when lock relays engage. If the supply voltage dips below 9.6V DC, the onboard 32-bit 400 MHz processor may reset. Separate high-draw electromagnetic locking hardware from the controller logic power feed or upgrade the field supply capacity.
Symptom: Relay chatter or failed lock engagement. Verify that the lock actuators are wired correctly across the 4 Form-C lock relays (NO/COM or NC/COM). Insufficient operating current can prevent relay contacts from latching cleanly under sustained load.

Ethernet and RS-485 Communication Troubleshooting

The C3-400 controller connects to management hosts via an onboard RJ-45 TCP/IP interface, RS-485 serial bus, or optional Wi-Fi.

Symptom: TCP/IP communication failure with centralized management software. Verify that the controller IP address is assigned to the correct local network subnet. If commissioned on managed switches, ensure port security does not block standard browser-based or server management protocols. Inspect Ethernet patch cabling for continuity.
Symptom: RS-485 reader or serial bus communication drops. RS-485 multidrop networks are polarity sensitive. Confirm that data lines (A and B / Data+ and Data-) are not inverted across the bus run. Check for proper daisy-chain topology across the reader network to eliminate signal reflections.

Reader Interface and Credential Recognition

The controller supports up to 12 readers across its 4 access points, accepting either up to 8 RS-485 readers or 4 standard 26-bit Wiegand readers.

Symptom: Card presented to reader yields no response or trigger event. Check the reader transmission protocol. Wiegand inputs require standard 26-bit format configurations. Ensure Data0 (green) and Data1 (white) conductors are securely seated in the terminal block and have not been transposed.
Symptom: Valid card denied at door terminal. Check internal memory limits. The C3-400 stores up to 30,000 cardholders and an internal buffer of 100,000 transaction events. If local flash memory (128 MB) or RAM (32 MB) holds corrupted user records, sync card databases directly from the management console.

Sensor Inputs, Auxiliary Relays, and Security Logic

The unit features 12 dedicated inputs (4 Request-to-Exit, 4 Door Status contacts, 4 Auxiliary inputs) and 8 Form-C relay outputs (4 lock relays, 4 auxiliary relays).

Monitored Point / Output	Physical Interface	Diagnostic Check
Exit Devices	4 Dedicated Inputs	Check normally open (NO) dry contact state across terminals. Confirm continuity when button is depressed.
Door Status	4 Dedicated Inputs	Verify magnetic reed switch continuity. Loose magnetic alignment triggers persistent door-ajar states.
Auxiliary Inputs	4 Dedicated Inputs	Inspect sensor loops tied to smoke detectors, fire alarm interfaces, or infrared motion detectors for open circuits.
Auxiliary Outputs	4 Form-C Relays	Check trigger output to sirens, strobe alarms, CCTV triggers, or doorbells under simulated duress or alarm events.
Door Interlock / Anti-Passback	Firmware Logic	Confirm door position states if interlock logic prevents Door B from opening while Door A is unlatched. Ensure exit readers register cardholder departure before re-entry when anti-passback is enabled.

Ensure the controller operates within its rated operating temperature of 0°C to 55°C and relative humidity range of 10% to 80% (non-condensing) inside the powder-coated aluminium enclosure.

Industrial and Commercial Application Environments for the eSSL C3-400 Access Controller

The eSSL C3-400 multi-door access controller is engineered to manage physical access control across multi-portal corporate, commercial, and industrial facilities. Featuring an onboard 32-bit 400 MHz processor, 32 MB RAM, and 128 MB flash memory, the unit handles local decision-making and event logging independently of constant server communication, making it suitable for distributed and mission-critical network architectures.

Enterprise Corporate Offices and Commercial Complexes

In high-throughput corporate environments, the eSSL C3-400 controls up to 4 separate doors from a single centralized panel. The controller accommodates large enterprise workforces with an onboard storage capacity of up to 30,000 cardholders and an internal offline transaction buffer of 100,000 log events. System administrators integrate the panel into existing local area networks via TCP/IP Ethernet (or RS-485 bus topologies) to maintain synchronized user permissions, centralize door schedules, and monitor transit logs through web browser-based management platforms.

Controlled Industrial Airlocks and Cleanroom Interlocking

Manufacturing facilities, research laboratories, and pharmaceutical cleanrooms frequently mandate interlocking mechanisms to prevent cross-contamination or environmental pressure loss. The C3-400 features native door interlock logic, ensuring that designated doors cannot unlock simultaneously. By utilizing 4 dedicated door status sensor inputs and 4 Form-C lock control relays, the board coordinates interlocked portal sets automatically, keeping secondary doors securely latched whenever a primary portal is ajar.

Perimeter Control and Anti-Passback Implementations

To eliminate credential sharing and unauthorized tailgating, the controller supports advanced anti-passback operating modes. Depending on site requirements, security integrators can wire up to 12 total readers (supporting configurations of either 8 RS-485 readers or 4 26-bit Wiegand reader interfaces) to track credentialed entry and exit sequences. If an employee does not clock an authorized entry scan, the C3-400 prevents exit verification, alerting security personnel to access anomalies.

Fire Alarm Integration and Emergency Evacuation Topologies

Industrial life-safety integration is facilitated through the controller's 12 onboard inputs and 8 relay outputs. Four dedicated auxiliary inputs directly interface with facility safety systems, including smoke detectors, fire alarm relay modules, and infrared motion sensors. Upon receiving an active signal from the fire alarm system, the controller can be configured to initiate global release sequences across the 4 Form-C lock relays while simultaneously engaging the 4 auxiliary Form-C relays to drive external warning equipment:

Fire System Signaling: Releases fail-safe electronic door hardware instantly across all 4 managed ingress/egress points during emergency triggers.
Auxiliary Output Actuation: Automatically triggers external strobe lights, sirens, or doorbells across designated warning zones.
CCTV Event Tripping: Aux relays close circuits to prompt third-party CCTV camera recording presets upon emergency input activation or forced-door alerts.

High-Security Asset Protection: Multi-Card and Duress Protocols

For sensitive operational zones such as server rooms, cash offices, and critical machinery rooms, the C3-400 provides multi-card opening algorithms and duress alarm modes. Multi-card verification requires two or more authorized credentials presented within a specified window before the Form-C lock relay trips. In hostage or forced-entry scenarios, duress credential sequences unlock the door normally while discreetly tripping auxiliary relay contacts connected to silent alarms or security operations center notification loops.

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