SMOKE DETECTOR WITH BASE

KTI07009001ASWB

Product Description

The 4-wire optical smoke detector with mounting base delivers rapid photoelectric detection of smoldering fires and integrates seamlessly with fire alarm and security automation systems.

Make / Brand: Agni
Model / Series: QS-300-RB Series
Sensor Technology: Photoelectric / Optical smoke sensing chamber
Wiring Configuration: 4-wire loop separating operating power from alarm switching contacts
Operating Voltage: Wide operating voltage range (nominal 12V to 24V DC loops)
Relay Output: External volt-free changeover alarm relay output (Form C contacts)
Mounting Base: Twist-lock ceiling base included for pre-wiring and rapid detector head servicing
System Compatibility: Compatible with conventional fire alarm control panels (FACPs) and intruder/security panels
Standards Reference: Sensing design engineered in reference to UL 268 and EN 54-7 performance criteria
Enclosure: Low-profile ceiling-mount housing

KTI07009001ASWB

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Product Details
Available Brands	GST
Unit	Numbers
HSN Code	85319000
Weight	0.29 kg
Warranty	12 Months No-Onsite Warranty
Tags/categories	Safety Fire Safety Solutions Smoke Detector

Usually dispatched within 2 days

About this product .

This conventional optical smoke detector operates on a reliable photoelectric sensing architecture designed to identify smoldering fires across commercial and industrial environments. Its sensing chamber utilizes advanced optoelectronic circuitry to ensure rapid response times while maintaining high stability against nuisance disturbances.
Built with a 4-wire circuit topology, the unit separates incoming auxiliary DC operating power from the alarm signaling loop. The wide operating voltage tolerance accommodates standard 12V to 24V DC power rails, making it suitable for both dedicated fire signaling and integrated building security installations.
The detector integrates an external volt-free changeover alarm relay featuring Form C contacts. This dry-contact interface enables direct integration with conventional fire alarm panels, third-party intrusion systems, HVAC damper triggers, and access control override controllers.
Supplied with a dedicated surface-mount twist-lock base, the hardware allows electrical cabling to be fully terminated before the detector head is attached. This modular design simplifies field installation and reduces commissioning labor across large-scale commercial facilities.
Engineered for widespread facility protection, the detector is suitable for deployment in manufacturing units, commercial offices, healthcare facilities, retail complexes, banks, and public infrastructure buildings.
The removable detector head twists off the base without disconnecting circuit wiring, enabling efficient chamber cleaning and routine maintenance to preserve optical sensitivity and avoid dust-induced false alarms.

Product Information .

Worship Places Industries, Factories Hospitals, Clinics Petrol Pumps Shopping Malls, Showrooms Government Buildings, Offices Banks Airports Railways, Bus Stations Construction, Builder Projects Pharma Industries Emergency Services

System Compatibility and Interfacing

System Architecture and Control Panel Interfacing

The Agni conventional optical smoke detector with base (SKU: KTI07009001ASWB) utilizes a 4-wire circuit architecture designed to separate operating DC power lines from alarm signaling circuits. Unlike standard 2-wire loop-powered detectors that transmit alarms by altering current draw on the detection loop, this 4-wire detector is engineered with wide operating voltage capability (typically spanning 8V DC to 30V DC with nominal 12V DC or 24V DC operation). This makes the unit fully compatible with conventional fire alarm control panels (FACPs) as well as commercial security and burglar alarm control panels that supply continuous auxiliary DC power.

Volt-Free Form C Relay Integration

Equipped with an external volt-free changeover alarm relay output (Form C dry contacts), this detector enables straightforward integration into diverse building management, life safety, and industrial monitoring systems. Upon optical smoke detection, the internal relay shifts state, facilitating dry-contact alarm triggering without requiring specialized proprietary interface modules.

This dry-contact relay topology allows direct hardware-level compatibility with:

Commercial Intrusion & Security Panels: Direct termination into standard normally open (NO) or normally closed (NC) auxiliary sensor zones powered from auxiliary 12V DC terminals.
Access Control Systems: Direct tie-in to trigger emergency fail-safe magnetic door holder releases and turnstile unlock sequences.
HVAC & Damper Automation: Direct signaling to trigger air handling unit (AHU) fan shutdown and smoke damper closure routines to mitigate the spread of smoke.
Auxiliary Plant Signaling: Direct connection to external strobes, sounders, autodialers, and supervisory programmable logic controllers (PLCs).

Electrical & Compatibility Parameters

Interface Parameter	Compatibility Specification
Circuit Architecture	4-wire operation (dedicated DC power supply conductors and dry contact relay signaling)
Operating Voltage	Wide DC voltage range (8V DC to 30V DC, nominal 12V DC / 24V DC auxiliary loops)
Alarm Contact Output	External volt-free changeover relay output (Form C contacts: NO / NC / Common)
Panel Compatibility	Conventional fire alarm control panels (FACPs), industrial alarm panels, and commercial burglar panels
Mounting & Termination	Dedicated 4-wire twist-lock relay base designed for ceiling surface mounting
Standard Alignment	Engineered in reference to UL 268 and EN 54-7; designed to meet approvals worldwide (UL, LPCB, CE)

Field Wiring and Base Mounting Compatibility

Supplied complete with its dedicated twist-lock mounting base, the unit allows pre-wiring of the ceiling termination point prior to head attachment. Two conductors terminate field auxiliary DC power, while two conductors connect to the Form C alarm loop. The twist-lock mechanical interface permits field engineers to detach the sensing head for maintenance or chamber inspection without disconnecting or compromising field circuit wiring.

Target Installation Environments

Due to its standard dry-contact signaling and wide-range DC voltage compatibility, this detector is suited for multi-sector industrial and commercial deployments. Target facilities include factories, industrial processing plants, commercial corporate offices, government buildings, banking branches, shopping malls, healthcare clinics, hospitals, petrol pumps, transit hubs, and places of worship requiring dependable conventional smoke sensing tied directly to fire, safety, or access systems.

Ceiling Mounting, 4-Wire Base Termination, and System Integration Guide

Proper field installation of the 4-wire conventional optical smoke detector with base (SKU: KTI07009001ASWB) requires adherence to standard industrial fire safety protocols and multi-core cable termination best practices. Designed for surface ceiling mounting across commercial offices, industrial plants, banks, hospitals, and transit hubs, the unit comprises a flame-retardant ABS engineering thermoplastic housing and a separate twist-lock relay base that facilitates rough-in wiring before the sensing head is engaged.

Ceiling Placement and Environmental Preparation

The detector head and base assembly has an aggregate gross weight of 0.29 kg and is engineered for rigid attachment to flat ceiling surfaces or standard conduit junction boxes. Site the detector away from direct air turbulence, forced-air ventilation diffusers, and excessively dusty manufacturing zones. Airborne fibers, construction dust, and ambient particulate accumulation within the optical sensing chamber will lead to premature contamination or nuisance triggers if the sensing head is exposed prior to completion of finishing works on site.

Four-Wire Electrical Termination Architecture

Unlike 2-wire zone-powered detectors, this unit utilizes a 4-wire circuit topology separating incoming DC operating power from the alarm output signaling lines. System integrators must provide four conductors to the mounting base:

Operating Power Loop (2 Conductors): Connect positive (+) and negative (-) conductors from the auxiliary DC power supply or control panel auxiliary power output. The detector features a wide operating voltage architecture accommodating direct current ranges typically from 8V DC to 30V DC (compatible with nominal 12V DC and 24V DC control panels).
External Alarm Relay Circuit (2 Conductors): Terminate the signaling conductors to the volt-free changeover relay contacts (Form C dry contacts). These contacts switch state upon optical smoke detection and integrate with zone input loops, intrusion panels, access control release systems, or HVAC air-handling shutdown relays.

Relay Output Integration with Third-Party Automation

The integrated volt-free changeover alarm relay output allows universal compatibility beyond dedicated conventional fire alarm control panels (FACPs). When used in automation and security applications, the dry contact changeover enables switching of external auxiliary loads or integration with building management systems (BMS). When wiring multiple 4-wire detectors along a single zone loop, ensure power supervisory relays or end-of-line (EOL) monitoring resistors are configured at the end of the run in accordance with EN 54-7 and UL 268 engineering standards.

Mechanical Engagement and Commissioning Sequence

To ensure dependable mechanical and electrical contact, complete installation according to the following procedure:

Fix the 4-wire mounting base securely to the ceiling or back-box using appropriate fasteners through the mounting apertures.
Strip the field cabling jacket and terminate the four conductor leads into the screw terminals of the base, verifying polarity on the power lines.
Inspect the terminal block to ensure no stray copper strands cause shorts between the DC operating supply and the volt-free alarm relay contacts.
Align the optical smoke detector head with the base alignment markers, push upward gently, and rotate clockwise until the twist-lock mechanism snaps into place.
Energize the DC power supply loop and observe the unit's operational indicator. Conduct a functional aerosol smoke or functional test sequence to verify that the internal Form C relay changes state and triggers the receiving monitoring panel.

The two-piece base-and-head design permits the detector head to be detached for cleaning or service without disconnecting or disturbing the field circuit wiring terminated on the base.

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