Essl Interlocking System 4 Door with memory

KTI01003001E4DI

Product Description

The Essl 4 Door Interlocking System with memory is an intelligent access controller engineered to regulate sequential door access across controlled environments, preventing contamination and security breaches.

Make/Brand: Essl
Model: Interlocking System 4 Door with memory
Door Capacity: 4-door interlocking management
System Architecture: Multi-door interlock logic with onboard memory support
Power Input: 12V DC power adapter input (+Ve Supply, -Ve Supply)
Sensor Compatibility: Terminal connections for Normally Closed (NC) and Common (COM) dry contact door sensors
Application Areas: Cleanrooms, pharmaceutical airlocks, server rooms, defense sectors, corporate facilities, and financial institutions

KTI01003001E4DI

Price

₹ 17,685.00 excl. GST

+ 18.00% GST. Freight after pincode at cart.

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Product Details
Available Brands	Essl
Unit	Numbers
HSN Code	73083000
Weight	0.62 kg
Warranty	12 Months No-Onsite Warranty
Tags/categories	Automation Access Control, Attendance System Door Interlocking

Usually dispatched within 11 days

About this product .

The Essl Interlocking System 4 Door with memory is a specialized access control solution designed to enforce strict sequential passage protocols across four interconnected entryways. By continuously monitoring the real-time status of each portal, the controller prevents simultaneous openings to maintain controlled environmental barriers.
Engineered with onboard memory logic, this controller retains operational state information to ensure orderly passage sequences even under rapid transit demands. When one door is opened, the controller immediately locks and holds the remaining three doors until the active door safely returns to its secure, closed position.
The unit operates reliably on a standard 12V DC regulated supply via dedicated positive and negative terminal connections. Its low-voltage architecture integrates seamlessly with standard industrial auxiliary power systems and battery-backed power supplies for uninterrupted fail-safe security.
For input sensing, the controller features dedicated terminal interfaces designed for Normally Closed (NC) and Common (COM) door contacts. It is fully compatible with magnetic door contacts, reed switches, and dry-contact mechanical switches to deliver instantaneous feedback on physical door positions.
This interlocking controller is extensively deployed in pharmaceutical cleanrooms, laboratories, and airlocks where air-pressure balances and cross-contamination prevention are mandatory. In addition, it provides robust zone containment in high-security environments including data center server rooms, defense sectors, and banking vaults.
Installation is straightforward via clearly labeled barrier screw terminals that simplify field wiring and routine operational audits. Routine maintenance requires only periodic continuity verification of connected door sensors and inspection of terminal screw retention.

Product Information .

Corporate Offices Worship Places Industries, Factories Hospitals, Clinics Shopping Malls, Showrooms Government Buildings, Offices Banks High Security Zones Defense Sectors Server Rooms Auditorium Conference Hall Emergency Services

Essl 4-Door Interlocking Controller Wiring and Installation Guide

Pre-Installation and System Layout Planning

The Essl 4-door interlocking controller (SKU: KTI01003001E4DI) is an access control system engineered to manage sequential door interlocking across up to 4 doors. With an overall net weight of 0.62 kg, the lightweight controller module can be integrated into central access control junction boxes, electrical enclosures, or facility control racks.

Before beginning physical installation, map out the layout of all 4 doors within your cleanroom airlock, pharmaceutical manufacturing suite, laboratory, server room, or high-security banking perimeter. Ensure that all conduit runs and low-voltage field cabling from door sensors converge at the designated central controller location.

12V DC Power Supply Input Wiring

The controller operates on an external regulated 12V DC adapter power supply. Direct power input wiring must be terminated at the designated power terminal blocks on the board:

Terminal 1 (+Ve Supply): Connect the positive lead from the regulated 12V DC adapter.
Terminal 2 (- Ve Supply): Connect the negative/ground lead from the regulated 12V DC adapter.

Verify supply polarity using a multimeter before energizing the board. Supplying clean, stable 12V DC power is essential for the continuous operation of the internal microprocessor and onboard memory tracking architecture.

Door Sensor Input Terminations (NC and COM)

To establish door position feedback and drive the interlocking logic, each monitored door requires dry contact feedback from compatible magnetic contacts, door position switches, or reed switches. Wire the sensor feedback leads directly into the corresponding door sensor input terminals:

Door Sensor Input (NC): Connect the Normally Closed (NC) contact of the door position sensor to Terminal 1 [Door Sensor1 I/P (NC)].
Door Sensor Common (COM): Connect the common ground loop contact of the door position sensor to Terminal 2 [Door Sensor1 I/P (COM)].

Repeat this input wiring configuration for each corresponding door channel across the 4-door layout. When a door is shut, the contact loop remains closed (NC). Once a door opens, the circuit opens, signaling the controller's onboard memory logic to immediately inhibit the operation of the other interconnected doors.

Terminal Connection Reference

Terminal Identifier	Signal / Function	Field Connection Target
1 - +Ve Supply (Adapter 12V)	DC Power Input (+)	12V DC Power Adapter Positive Lead
2 - - Ve Supply (Adapter 12V)	DC Power Input (-)	12V DC Power Adapter Negative / Ground Lead
1 - Door Sensor1 I/P (NC)	Door 1 Status Input	Door 1 Magnetic Switch Normally Closed Contact
2 - Door Sensor1 I/P (COM)	Door 1 Sensor Common	Door 1 Magnetic Switch Common Contact

Commissioning and Interlocking Logic Verification

Once all power connections and sensor input loops are secured, power on the 12V DC supply to commission the controller. Begin testing sequential door operation starting with Door 1:

Open Door 1 and confirm that the open circuit triggers the interlock logic, preventing the remaining doors in the 4-door loop from operating. Close Door 1 to restore the NC circuit, verifying that the controller registers the closure through its onboard memory tracking. Repeat this sequential validation individually across all remaining connected doors to confirm reliable airlock integrity and security compliance across the facility.

Industrial and Commercial Applications for 4-Door Interlocking Systems

Cleanroom and Pharmaceutical Airlock Sequencing

The Essl 4-door interlocking controller with memory (SKU: KTI01003001E4DI) is primarily engineered for controlled environments where differential air pressure and environmental cleanliness must be preserved. In pharmaceutical manufacturing plants, biotechnology laboratories, and cleanroom gowning zones, maintaining air boundaries between classified clean areas and external corridors is critical. The system coordinates up to four interconnected access points, ensuring that when an operator opens one door, the remaining three doors immediately lock.

By monitoring the door position through dedicated Normally Closed (NC) and Common (COM) sensor input terminals, the controller identifies the physical state of each entryway in real time. This sequential interlocking logic prevents cross-contamination, regulates air exchange across anterooms, and maintains sterile air pressure cascades required in cleanroom protocols.

Data Centers, Server Rooms, and Defense Sector Mantraps

High-security installations require strict access compartmentalization to counter piggybacking and tailgating. In enterprise server rooms, data center staging areas, and defense facilities, this 4-door controller functions as the central logic unit for interlocking mantrap portals. Security planners can configure multi-compartment access chambers where physical progression is strictly restricted to one barrier at a time.

The integrated onboard memory architecture allows the system to manage complex interlocking logic across up to four distinct doors, providing reliable sequential handling for critical infrastructure perimeters. Operating on a dedicated 12V DC power input via clearly marked positive (+Ve) and negative (-Ve) adapter supply terminals, the unit can be tied into central low-voltage power networks or uninterruptible power systems.

Banking Environments, Cash Vaults, and Secure Holding Areas

Commercial banks, currency handling depots, and secure document rooms require physical mantrap setups to separate public spaces from high-security back-office vaults. The Essl interlocking system coordinates outer entry doors, transition chambers, and vault portals to ensure personnel pass through an isolated intermediate zone. The second door cannot release until the primary door has returned to its secured position and completed the circuit across its NC/COM dry-contact sensor loop.

Healthcare Facilities, Isolation Suites, and Critical Care Wings

Hospitals and clinical environments deploy 4-door interlocking controllers to manage biological isolation rooms, specialized surgical suites, and hazardous material storage areas. In airborne infection isolation rooms (AIIR), the controller prevents negative pressure loss by enforcing that buffer anteroom doors and patient room doors cannot open simultaneously. This protects medical staff, visitors, and adjacent corridors from pathogen exposure.

Corporate Offices, Industrial Plants, and Commercial Infrastructure

Beyond specialized cleanrooms and financial security zones, the 0.62 kg controller is deployed across large commercial developments, industrial factories, emergency response facilities, government offices, auditoriums, and conference halls. Facilities with adjacent sensitive sectors—such as industrial test labs, executive boardrooms, and command centers—benefit from automated sequential door gating that restricts free transit between low-security and restricted zones.

Deployment Configuration Overview

Pharmaceutical & Cleanroom Airlocks: 4-door cascade control preventing particulate migration and cross-contamination across sterile zones.
Data Centers & Server Rooms: Physical mantrap deployment preventing tailgating and unauthorized access into sensitive server cages.
Banking & Financial Institutions: Dual- or multi-door secure passage logic for cash transfer chambers and vault ante-spaces.
Healthcare Facilities: Environmental zoning for negative/positive pressure isolation rooms and quarantine wards.
Industrial & Defense Sites: Access compartmentalization separating public entrance lobbies from classified production and command areas.

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SKU	KTI01003001E4DI	KTI01003001PNBR	KTI01003001DZ4D	—
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Price (excl. GST)	₹ 17,685.00 excl. GST	Ask for price	₹ 14,173.65 excl. GST	—
GST %	18.00%		18.00%	—
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Availability	Made to Order	Made to Order	Made to Order	—
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