eSSL C3 200 2 Door Access Controller

KTI010050012DAC

Product Description

The eSSL C3-200 is an enterprise-grade 2-door network access control panel engineered for centralized bidirectional entry and exit management in commercial and industrial installations.

Make / Brand: eSSL
Model: C3-200
Doors Controlled: 2 Doors (bidirectional control)
Reader Capacity: Supports up to 8 readers (4 RS-485 readers or 4 26-bit Wiegand readers)
Reader Interface: Standard 26-bit Wiegand or RS-485 communication bus
Inputs: 6 onboard inputs (2 Request-to-Exit push button, 2 Door Status magnetic sensor, 2 Auxiliary)
Outputs: 4 onboard Form-C relay outputs (2 Lock control relays, 2 Auxiliary relays)
Credential Capacity: 30,000 cardholders
Transaction Buffer: 100,000 event log records
Hardware Architecture: 32-bit 400 MHz CPU, 32 MB RAM, 128 MB non-volatile Flash Memory
Host Communication: TCP/IP Ethernet and RS-485 (optional Wi-Fi)
Power Requirement: 12V DC, 1.5A external regulated power input
Enclosure: Powder-coated aluminium wall-mount cabinet
Operating Temperature: 0°C to 45°C
Compliance & Standards: IEEE 802.3 TCP/IP, EIA/TIA RS-485, SIA 26-bit Wiegand

KTI010050012DAC

Price

₹ 11,616.75 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	3.4 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 5 days

About this product .

The eSSL C3-200 is a dedicated dual-door access controller designed to provide robust security and traffic regulation across mid-to-large corporate offices, industrial plants, healthcare institutions, and educational facilities. Constructed inside a heavy-duty powder-coated aluminium bundle enclosure, the unit accommodates surface wall mounting and protects the internal circuit board and field terminations from airborne dust and accidental mechanical disruption.
Powered by a 32-bit 400 MHz processor paired with 32 MB of system RAM and 128 MB of flash storage, the controller supports standalone database execution. It locally retains up to 30,000 active cardholder records and up to 100,000 chronological event transaction logs, ensuring uninterrupted access verification and credential auditing even when network connectivity to the central management host is temporarily severed.
Flexible field device compatibility allows the controller to interface with up to eight card or biometric readers using either 4 standard 26-bit Wiegand connections or a 4-reader multi-drop RS-485 communication bus. The terminal strip layout features six dedicated onboard inputs for two door status reed switches, two request-to-exit buttons, and two auxiliary trigger sensors, alongside four Form-C dry contact relays for direct driving of fail-safe or fail-secure locking mechanisms and external alert sounders.
Advanced firmware functionality built into the controller includes hardware anti-passback to prevent card sharing, two-door interlocking logic for cleanrooms and mantrap airlocks, and multi-card unlocking routines. Auxiliary input-output linkage further permits cross-system integration, triggering automated lock releases or security alerts upon signals received from fire alarm panels, intrusion detection systems, or perimeter beams.
Primary communication with host administration software is established via an onboard IEEE 802.3 TCP/IP 10/100 Mbps Ethernet port, with auxiliary RS-485 serial multidrop and optional Wi-Fi networking available. Routine maintenance requires periodic validation of the external 12V DC, 1.5A power supply stability and routine checking of terminal wire tightness on reader and lock relay blocks.

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

Hardware, Reader, and Network Interface Compatibility

The eSSL C3-200 two-door access controller (KT SKU: KTI010050012DAC) is engineered for broad integration across enterprise security environments, access control peripherals, and local area network infrastructures. Designed to regulate two doors independently, the controller provides standardized communication buses, dry contact relay outputs, and supervised digital inputs to connect with legacy and modern field devices.

Access Reader Interface Compatibility

The C3-200 supports up to 8 readers across two distinct field wiring architectures. Installers can interface up to four 26-bit Wiegand readers (with other Wiegand bit formats supported upon request) using dedicated onboard DATA0, DATA1, GND, and +12V terminations, or deploy up to four RS-485 slave card readers over a multi-drop serial bus.

This dual-interface reader architecture provides native compatibility with an extensive range of credential scanning peripherals, including:

Standard 26-bit Wiegand RFID proximity and smart card readers
Wiegand-compatible numeric PIN keypads
Wiegand or RS-485 optical barcode and QR code scanners
Proprietary RS-485 serial slave readers for long-distance multi-drop runs

Electric Locking Hardware Integration

Lock control is executed via two onboard Form-C electromechanical relays, complemented by two auxiliary Form-C relays. Each relay offers dry contacts with isolated Normally Open (NO), Normally Closed (NC), and Common (COM) terminals. This layout facilitates direct electrical interfacing with both primary categories of electronic locking hardware:

Fail-Safe Devices: Direct integration via COM and NC terminals for continuous power-to-lock devices such as electromagnetic locks (maglocks) and fail-safe shear locks.
Fail-Secure Devices: Direct connection via COM and NO terminals for power-to-unlock mechanisms including electric strikes, motor-driven drop bolts, and electromechanical mortise locks.

The two dedicated auxiliary Form-C relays integrate seamlessly with external automation controllers, sirens, visual strobes, or building management panels for programmable event-triggered outputs.

Sensor, Switch, and Auxiliary Input Compatibility

The controller integrates six onboard hardware inputs configured for dry contact field signaling. These include two dedicated exit device inputs, two door status sensor inputs, and two auxiliary inputs. Compatible peripheral devices include:

Standard momentary Normally Open (NO) push-to-exit buttons and touch sensors
Magnetic reed switches and door position sensors (DPS) for door open/closed monitoring
Normally Open or Normally Closed auxiliary triggers, such as smoke detectors, intrusion alarm sensors, and perimeter beam detectors

These onboard inputs enable native hardware-level interlocking (mantrap/airlock functionality between two doors) and anti-passback rule enforcement without requiring external logic modules.

Host Network Protocols and Management System Integration

For administrative deployment and data synchronization, the C3-200 interfaces with local infrastructure using standard IEEE 802.3 TCP/IP Ethernet networking, EIA/TIA RS-485 multi-drop serial communication, and optional Wi-Fi. The controller communicates over standard IP networks directly with eSSL access control server software and desktop management applications.

Powered by a 32-bit 400 MHz CPU, 32 MB of RAM, and 128 MB of onboard flash memory, the controller independently retains access policies for up to 30,000 cardholders and logs up to 100,000 offline event transactions, ensuring uninterrupted authentication if communication with the host server drops.

System Compatibility and Interface Specifications

Interface / Subsystem	Compatible Specification / Protocol	Hardware Capacity
Reader Ports	26-bit Wiegand (others upon request), RS-485	Up to 8 readers (4 RS-485 or 4 Wiegand)
Lock Control Relays	Form-C Dry Contacts (NO / NC / COM)	2 Relays (Fail-safe and Fail-secure locks)
Auxiliary Outputs	Form-C Dry Contacts (NO / NC / COM)	2 Relays (Alarms, sirens, external linkages)
Monitored Inputs	Dry Contact Digital Inputs	6 Inputs (2 Exit, 2 Door Status, 2 AUX)
Host Uplink	TCP/IP Ethernet, EIA/TIA RS-485, Optional Wi-Fi	1 Network Bus to eSSL Management Software
Power Input	Regulated Direct Current	12V DC, 1.5A input requirement

Installation and Field Wiring Guide for eSSL C3-200 Two-Door Access Controller

Mechanical Enclosure and Mounting Specifications

The eSSL C3-200 access control system is supplied in a protective powder-coated aluminium enclosure intended for secure surface wall mounting in indoor control rooms or telecommunications closets. The bundle enclosure measures 380 mm (L) × 80 mm (W) × 280 mm (H) [15 in. × 3.15 in. × 11 in.] with a total weight of 7.5 lbs (3.4 kg). When unhoused for dedicated panel sub-assembly integration, the controller board measures 160 mm × 106 mm [6.3 in. × 4.17 in.]. Install the unit on a flat, vibration-free vertical surface within an ambient operating temperature envelope of 0°C to 45°C.

Power Supply Terminal Connections

The C3-200 system operates on a dedicated external DC power source. Terminate power input conductors to the primary board terminals adhering strictly to polarity markers:

Input Voltage: Regulated 12V DC.
Current Rating: Minimum 1.5A dedicated controller supply.
Polarity: Verify positive (+12V) and ground (GND) lines prior to energizing to prevent input circuit faults. Electronic locking hardware and auxiliary signalling devices drawing high peak currents must be powered using an appropriately rated external auxiliary power supply sharing a common reference ground.

Reader Interface Wiring: Wiegand and RS-485

The controller manages up to 2 doors independently and supports up to 8 total readers configured as either 4 RS-485 serial readers or 4 standard 26-bit Wiegand readers (other formats available upon request):

26-Bit Wiegand Bus: Wire reader leads to the dedicated onboard Wiegand terminal ports consisting of DATA0 (WD0), DATA1 (WD1), Ground (GND), and +12V DC power output. Avoid cross-wiring DATA0 and DATA1 to prevent credential read corruption.
RS-485 Reader Bus: For multi-drop reader wiring, land shielded twisted-pair cabling onto the dedicated RS-485 reader terminals (485A+ and 485B-), maintaining continuous bus topology and terminating bus ends per RS-485 networking practices.

Lock Relay and Auxiliary Output Configuration

The controller provides 4 onboard Form-C relay outputs featuring dry Normally Open (NO), Normally Closed (NC), and Common (COM) contact screw terminals:

Relay Output	Relay Type	Typical Field Device Assignment	Circuit Operation
Lock Relays 1 & 2	Form-C Dry Contact	Electromagnetic locks, electric strikes, drop bolts	NC/COM for fail-safe (power-to-lock); NO/COM for fail-secure (power-to-unlock)
Aux Relays 1 & 2	Form-C Dry Contact	External sirens, strobe lights, automation controllers	Configurable dry contact trigger for alarm linkages and interlock signals

Input Sensor and Request-to-Exit Terminations

The C3-200 controller is engineered with 6 onboard digital inputs for direct field monitoring:

Exit Device Inputs (2): Connect standard normally open (NO) momentary exit push buttons for Door 1 and Door 2 across the respective exit input and ground terminals.
Door Status Inputs (2): Terminate magnetic door position reed contacts across the door sensor terminals to monitor open/closed door states, tailgating, and door forced-open conditions.
Auxiliary Inputs (2): Connect dry-contact external sensors such as smoke detectors, intrusion alarms, or auxiliary triggers to activate automated interlock or alarm linkage routines.

Network and System Commissioning

Connect the C3-200 controller to the local area network using the onboard RJ-45 TCP/IP Ethernet interface (IEEE 802.3 standard) or the primary RS-485 communication bus; optional Wi-Fi connectivity is supported where field cabling is impractical. Assign an unconflicted IP address and appropriate subnet mask within your management software to communicate with the onboard 32-bit 400 MHz CPU, 32 MB RAM, and 128 MB non-volatile flash memory, which maintains 30,000 cardholders and 100,000 transaction events offline during network outages.

eSSL C3-200 Access Controller Troubleshooting & Technical Diagnostics Guide

Power Supply and Hardware Status Diagnostics

The eSSL C3-200 operates on a recommended power supply of 12V DC, 1.5A. If the controller board fails to power up or the RUN indicator light remains unlit or unresponsive, verify the incoming DC voltage directly at the controller power input terminals using a calibrated multimeter. Insufficient supply voltage below the 12V DC threshold or reverse DC polarity will prevent the 32-bit 400 MHz processor from booting.

Ensure that peripheral loads, such as electronic strikes, magnetic locks, or multiple external readers, are not pulling power directly from the controller logic terminals in excess of the rated 1.5A capacity. If heavy inductive loads cause voltage drops, isolate lock power supplies using dedicated auxiliary power lines rather than bridging off the logic board power terminals.

TCP/IP and RS-485 Network Communication Faults

Communication failure between the C3-200 controller and the central access management server typically manifests as an offline device status across TCP/IP or RS-485 communication channels. For Ethernet-based TCP/IP drops, review local network parameters to ensure no IP address conflicts exist on the local subnet. Verify that management server communication ports are not filtered or blocked by network firewalls or managed network switches.

When utilizing RS-485 multi-drop communication buses, check that the RS-485 polarity is correctly maintained throughout the daisy chain. A single inverted line or improper bus termination can disrupt data transmission across the serial loop. If optional Wi-Fi hardware is deployed, confirm signal strength and local network gateway routing.

Wiegand and RS-485 Card Reader Interface Errors

The C3-200 supports up to 8 readers, accommodating either 4 RS-485 readers or 4 26-bit Wiegand readers across its 2 controlled doors. When readers emit power beeps but fail to register credentials or return invalid card reads, review the data wiring terminations immediately:

Reversed Data Lines: Ensure Wiegand DATA0 and DATA1 lines are not transposed. Swapping these conductors causes unreadable data streams or unparsed credential packets.
Cable Distance and Interference: Excessive cable runs without proper shielding can degrade 26-bit Wiegand pulse signals. Keep reader transmission distances within standard specifications.
Reader Protocol Compatibility: Verify that connected credentials and reader heads output the standard 26-bit Wiegand format or compatible RS-485 protocol recognized by the controller firmware.

Form-C Lock Relay and Input Sensor Troubleshooting

The controller provides 4 onboard Form-C relay outputs (2 relays dedicated to door locks and 2 relays for auxiliary outputs) along with 6 onboard inputs (2 request-to-exit push button inputs, 2 door status sensor inputs, and 2 auxiliary inputs). When locking mechanisms fail to release or remain permanently unlocked, execute the following operational checks:

Symptom	Probable Cause	Diagnostic & Corrective Action
Lock remains continuously energized	Inverted relay contact configuration	Verify lock type wiring. Fail-safe (power-to-lock) devices require NC (Normally Closed) and COM terminals; fail-secure (power-to-unlock) devices require NO (Normally Open) and COM terminals.
Relay clicks but lock does not drop	Insufficient lock driving voltage	Form-C relays provide dry contacts only. Ensure an external power source is correctly wired in series with the lock circuit.
Door status registers open permanently	Magnetic reed switch fault or wiring open	Inspect door status input terminals. Confirm magnetic reed contact is correctly aligned and closes the circuit when the door rests shut.
Exit push button fails to trigger relay	Open circuit or incorrect contact type	Ensure exit device is wired across dedicated exit inputs using normally open (NO) momentary dry contacts.

Offline Buffer and Memory Diagnostics

The controller architecture utilizes 128 MB Flash Memory and 32 MB RAM, providing capacity for up to 30,000 cardholders and an offline transaction buffer of up to 100,000 log events. If the controller stops logging events or rejects recognized credentials during network outages, confirm whether the 100,000 transaction event threshold has been reached without being polled by the software. Synchronize the controller with the access management software over TCP/IP to clear historical transaction logs and refresh cardholder access privileges into the onboard flash memory.

Industrial and Commercial Applications for the eSSL C3-200 Controller

The eSSL C3-200 two-door access controller (KT internal SKU: KTI010050012DAC) delivers centralized access control and physical security automation across commercial, educational, and industrial facilities. Powered by a 32-bit 400 MHz CPU, 32 MB RAM, and 128 MB non-volatile flash memory, the controller independently regulates 2 doors while retaining up to 30,000 cardholders and 100,000 offline event transaction logs. Its multi-protocol architecture, onboard auxiliary I/O, and Form-C relays support diverse architectural deployment scenarios.

Bidirectional Commercial and Industrial Perimeter Access

In standard commercial and manufacturing environments, managing primary employee and visitor access points requires reliable credential validation and fast throughput. The C3-200 accommodates up to 8 readers—supporting either 4 RS-485 readers or 4 standard 26-bit Wiegand readers—enabling bidirectional card validation (entry and exit) across two independent doors.

Its 2 dedicated Form-C lock relays provide Normally Open (NO) and Normally Closed (NC) dry contacts, driving fail-safe devices such as magnetic locks or fail-secure hardware such as drop bolts and electric strikes. Direct integration with 2 request-to-exit push buttons and 2 door status magnetic contacts allows the controller to oversee door cycle timing and unauthorized forced-entry detection locally.

Cleanroom, Laboratory, and Cash-Handling Mantrap Interlocking

High-security and contamination-controlled environments—such as pharmaceutical cleanrooms, analytical laboratories, and cash-handling transfer airlocks—require door interlocking (mantrap) logic to prevent cross-contamination or breach. The C3-200 supports native hardware-level door interlocking without requiring external logic boards.

By continuously monitoring door position reed switches through its 2 door status inputs, the controller automatically locks the secondary door whenever the primary door is opened. Only after the active door has fully shut and its sensor circuit closes can the second door receive an access grant, maintaining environmental differential pressures and secure perimeter isolation.

High-Security Credential Verification with Anti-Passback Control

Facilities requiring strict perimeter accounting—such as data server rooms, distribution warehouses, and restricted technical zones—benefit from the C3-200 controller's hardware-level anti-passback functionality. When readers are installed at both entry and exit positions of a doorway, the controller enforces sequential read rules, preventing a cardholder from passing their credential back to an unauthorized individual.

Because the 32-bit processor executes anti-passback verification directly onboard within its 30,000 cardholder database, access decisions occur instantly without network latency. In the event of a network disruption over its TCP/IP or RS-485 interfaces, the non-volatile memory logs all attempts and continues enforcing access parameters offline.

Fire Safety and Alarm Linkage Automation

The C3-200 is engineered with 6 total onboard inputs and 4 total Form-C relay outputs, allocating 2 auxiliary inputs and 2 auxiliary relay outputs for system integration. Facilities can link external safety systems directly into the access controller:

Emergency Break-Glass and Fire Alarm Integration: Auxiliary inputs terminate triggers from smoke detectors or building fire panels, automatically signaling the Form-C lock relays to release fail-safe doors for life-safety egress.
Intrusion Alarm and Annunciator Control: The 2 auxiliary Form-C relays can trigger external sirens, flashing strobes, or signals to third-party automation controllers upon detecting forced doors or sensor tampering.

Application Scenario Matrix

Deployment Type	Reader Interface Used	Relay Configuration	Associated Monitored Inputs
Standard Dual-Door Office	26-bit Wiegand Card/PIN Readers	2 Form-C Lock Relays (Fail-Safe/Fail-Secure)	2 Exit Push Buttons, 2 Door Status Switches
Secure Airlock / Mantrap	26-bit Wiegand or RS-485 Readers	Interlocked Lock Relays (Mutual Exclusion)	2 Magnetic Door Position Sensors
High-Security Entry Zone	Bidirectional RS-485 Readers	Lock Relays with Anti-Passback Logic	2 Door Status Sensors, Anti-Passback Validation
Fire-Linked Industrial Egress	Standard 26-bit Wiegand Readers	Lock Relays + Auxiliary Output Linkage	Auxiliary Smoke/Fire Trigger Inputs

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