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02 / Discipline

ELV Systems.
Coordinated safety, visible only when needed.

19 sub-services · 18 brands

CCTV, fire alarm, hydrant, PAVA voice-alarm, access control, nurse call and boom barriers — engineered to NBC, IS and NFPA codes on one command surface.

· Quick answer

What are ELV systems, and how does TechnoGuru deliver them?

TechnoGuru engineers ELV — extra-low-voltage — systems as one coordinated backbone rather than separate trades: fire detection and alarm, CCTV surveillance, access control, public address and voice evacuation, structured cabling and building management. A single Guwahati practice designs, installs, commissions and supports the whole backbone across North-East India, so detection, alarm, access and BMS interfaces are planned together and the building behaves as one.

ELV delivery: separate trades vs one coordinated system
ELV delivery: separate trades vs one coordinated system
AspectTypical fragmented deliveryTechnoGuru — coordinated
AccountabilityEach system bought from a different vendorOne practice owns the whole ELV backbone
Cause-and-effectFire, PA, access and BMS interfaces wired late, if at allInterfaces designed from the start so systems trigger together
ApprovalsEach trade chases its own sign-offDetection, evacuation and integration planned toward the fire NOC as one
SupportSeveral maintenance contracts, overlapping blameA single accountable maintenance contract

Indicative of how integrated ELV delivery differs from single-trade procurement — not a statement about any specific vendor.

ELV — extra-low-voltage and life-safety — is the bedrock of any serious building. We design every loop, every camera, every detector around the cause-and-effect logic that has to play out when something goes wrong: lifts that home to the ground floor on alarm, doors that release at the right moments, the PA chain that announces the affected zone before the guard radio does. Compliance to NBC, IS 2189 and NFPA 72 is the floor.

From IP surveillance and access control through to the three fire families — fire hydrant, fire alarm and fire extinguishers — engineered to readiness where applicable to project scope, plus hydrant networks, PAVA, nurse call and security screening at the gate, everything talks. One panel, one log, one accountable hand — subject to drawings, AHJ/consultant review and project scope.

/ Integrated ELV systems

How integrated ELV systems work together.

An integrated ELV system connects fire detection, suppression, surveillance, access control, public address, structured cabling and BMS / IBMS monitoring into one coordinated building infrastructure layer. The map below shows how these subsystems share pathways, signals and cause-and-effect logic across a data-center or server-room environment.

Integrated ELV systems map showing fire alarm, VESDA, gas suppression, CCTV, access control, public address, structured cabling and BMS integration for a data center environment.
Integrated ELV systems for data centers and critical infrastructure — shown as a simplified system map for design discussion. Not a live dashboard or project photograph.

Read deeper on the individual subsystems: Fire Alarm & Detection · CCTV & Surveillance · Access Control · PA / Voice Evacuation · Structured Cabling · BMS / IBMS

/ Capability stack

19 services in ELV.

Click or hover any service in the index to see its capabilities, brand stack and a representative installation context.

Coverage. Storage. Evidence.

CCTV & Surveillance

IP video surveillance — Hikvision, Dahua, Axis, Bosch — designed to coverage, recording-bandwidth and retention specifications, with VMS and AI-analytics overlays.

/ Capabilities

  • Camera selection and placement to face/IDR capture
  • VMS deployment (Honeywell Pro-Watch, Bosch BVMS, Hikvision HCP)
  • Storage sizing to retention and bitrate
  • AI analytics — ANPR, face-search, line-cross, intrusion

/ Brand stack

HikvisionDahuaAxisBosch
Open service page

19 services in ELV Systems

CCTV, fire alarm, hydrant, PAVA voice-alarm, access control, nurse call and boom barriers — engineered to NBC, IS and NFPA codes on one command surface.

CCTV & Surveillance

IP video surveillance — Hikvision, Dahua, Axis, Bosch — designed to coverage, recording-bandwidth and retention specifications, with VMS and AI-analytics overlays.

Capabilities
  • Camera selection and placement to face/IDR capture
  • VMS deployment (Honeywell Pro-Watch, Bosch BVMS, Hikvision HCP)
  • Storage sizing to retention and bitrate
  • AI analytics — ANPR, face-search, line-cross, intrusion
  • PoE+/PoE++ network design
  • Integration with access control and alarm
  • Video Management System (VMS) integration
  • Facial-recognition analytics
  • ANPR / number-plate recognition
Brand stack

Hikvision, Dahua, Axis, Bosch

Access Control

Card, biometric, mobile-credential and visitor-management — Honeywell, HID, Matrix and Suprema — integrated with CCTV, intrusion and HR systems.

Capabilities
  • Multi-credential readers (card, biometric, mobile)
  • Anti-passback, mantrap and turnstile integration
  • Visitor management and pre-registration
  • HR / Active Directory / SAP HCM integration
  • Audit, compliance and forensic event log
  • Yale digital smart locks
  • Hotel guest-room electronic locking — RFID and mobile-key locks, encode-on-check-in via the PMS, offline door-event audit
  • Biometric and facial-recognition attendance
  • Queue and token management
Brand stack

Honeywell, HID, Suprema, Lenel, Yale

Fire Alarm System

Addressable and conventional fire detection and alarm — one of the three fire families (fire alarm, fire hydrant, fire extinguishers) — Honeywell, Bosch, Notifier and Siemens panels — integrated with PA, BMS, access control and emergency lighting to readiness per NBC, IS 2189 and NFPA 72, for consultant and AHJ review.

Capabilities
  • Addressable loop design and panel sizing
  • Cause-and-effect programming
  • Integration with PA, BMS, lifts, access control
  • Aspirating smoke detection (VESDA) for critical zones
  • Wireless detection for heritage and retrofit
  • Fire NOC drawings and statutory liaison
Brand stack

Honeywell, Bosch, Notifier, Siemens

Fire Hydrant System

Wet- and dry-riser hydrant systems — one of the three fire families (fire alarm, fire hydrant, fire extinguishers) — jockey-and-main pump rooms, yard hydrants and four-way fire-brigade inlets, engineered to readiness per NBC, IS 13039 and NFPA 14 for consultant and AHJ review.

Capabilities
  • Hydraulic calculation and pump sizing
  • Wet-riser, dry-riser and ring-main design
  • Underground and overhead static-water reservoir
  • Yard hydrants, hose reels, hose cabinets
  • Four-way fire-brigade inlets
  • AMC, mock drills, hose pressure testing
  • Portable fire extinguishers (supply and refill)
Brand stack

Newage, Grundfos, Kirloskar

X-Ray Baggage Scanners

Dual-energy X-ray baggage and parcel scanners for airports, hotels, government buildings, courts, malls and corporate lobbies.

Capabilities
  • Single- and dual-view tunnel scanners (60×40 to 150×180)
  • Dual-energy material discrimination
  • Threat-image projection (TIP) for operator training
  • Network and central monitoring integration
  • AERB radiation safety certification support
Brand stack

Smiths Detection, Rapiscan, Nuctech

Under Vehicle Surveillance (UVSS)

Embedded high-resolution UVSS with ANPR and driver-occupant cameras — a critical first line of defence at every vehicle entry point.

Capabilities
  • Full-chassis high-resolution imaging
  • ANPR plate-read with database comparison
  • Driver and occupant camera capture
  • Difference-detection alerting
  • Integration with boom barriers and access control
Brand stack

Comm Port

Door-Frame Metal Detectors

Multi-zone DFMDs with adjustable sensitivity, pinpoint LED indicators and networked logging — for hotels, courts, places of worship, malls and government buildings.

Capabilities
  • Multi-zone (8 to 33 zones) detection
  • Programmable sensitivity per environment
  • Networked event logging
  • ESD-safe and radiation-safe
  • Integration with X-ray and access control
  • Handheld metal detectors (HHMD)
Brand stack

Smiths Detection

Boom Barriers & Motorised Gates

Boom barriers, sliding and swing gates, road blockers, bollards and turnstiles — integrated with ANPR, RFID and access control.

Capabilities
  • High-speed boom barriers (1.5s open)
  • Swing, sliding and cantilever gates
  • Crash-rated bollards (K4 / K8 / K12)
  • ANPR, RFID and UHF integration
  • Loop and photocell safety
Brand stack

FAAC, BFT, Came

Nurse Calling System

IP-based nurse call systems with bedside, bathroom, code-blue and staff-presence stations, integrated with mobile and PA.

Capabilities
  • Bedside, bathroom, code-blue, code-pink stations
  • Staff-presence and assist buttons
  • Corridor dome lights and zone displays
  • Mobile-app and DECT pager integration
  • Service-quality reporting
Brand stack

Honeywell

Gas Suppression System

Clean-agent and inert-gas fire suppression — the clean agent flooding system of consultant schedules — FM-200/HFC-227ea, fluoroketone-class NOVEC 1230, CO2 and inert-gas systems — for server rooms, data centres, archives, electrical and panel rooms and other spaces where water would do as much damage as the fire, engineered to readiness per NBC, relevant IS codes and NFPA 2001/12 for consultant and AHJ review.

Capabilities
  • Enclosure integrity and agent-concentration design
  • Clean-agent, inert-gas and CO2 agent selection
  • Cross-zoned detection and discharge interlocks
  • Abort, manual-release and pre-discharge warning logic
  • Door-fan integrity testing at commissioning
  • AMC: cylinder weighing, pressure checks, re-validation
Brand stack

Honeywell, Siemens, Tyco

Fire Sprinkler System

Automatic water sprinkler systems — wet, dry, pre-action and deluge — engineered to readiness per NBC, relevant IS codes and NFPA 13, and coordinated with the fire-hydrant and fire-alarm systems for consultant and AHJ review.

Capabilities
  • Hydraulic calculation by occupancy and hazard class
  • Wet, dry, pre-action and deluge system design
  • Sprinkler head selection, spacing and zoning
  • Flow- and pressure-switch interface to fire alarm
  • Coordination with hydrant pump room and reservoir
  • AMC: pump tests, flow tests, head inspection
Brand stack

Tyco, Viking, Grundfos

Emergency Lighting & Egress Signage

Emergency and egress lighting with photoluminescent exit and wayfinding signage — self-test luminaires, central-battery systems and IS-compliant signage — designed so occupants can find and follow a marked route to a final exit when normal power fails, engineered to readiness per NBC and relevant IS codes for consultant and AHJ review.

Capabilities
  • Escape-route emergency lighting design to illuminance
  • Self-test luminaire and central-battery system selection
  • Photoluminescent exit and directional signage layout
  • Open-area and high-risk-task emergency lighting
  • Commissioning: strike-on-fail and duration testing
  • AMC: discharge tests, signage checks, inspection records
Brand stack

Philips, Wipro, Eaton, Prolite Autoglo

Fire Doors & Fire-Rated Shutters

Fire-rated doorsets and rolling shutters — passive fire protection at compartment lines, staircases and service openings — with frames, closers, panic hardware and magnetic hold-open release coordinated with the fire alarm and the escape plan, supplied and installed where project-fit.

Capabilities
  • Fire-rated doorsets and frames by rating class (30/60/120-minute categories)
  • Fire-rated rolling shutters for service and compartment openings
  • Closers, intumescent seals, vision panels and panic hardware
  • Magnetic hold-open devices released by the fire-alarm panel
  • Escape-plan and compartmentation coordination against the drawings
  • Periodic inspection and maintenance with recorded findings

Fire Extinguishers & Fire-Protection Goods

Portable fire extinguishers — one of the three fire families (fire alarm, fire hydrant, fire extinguishers) — ABC dry powder, CO2, clean-agent, foam and water classes, with site-assessed placement, mounting, signage, refilling and AMC, along with related fire-protection goods and accessories.

Capabilities
  • Extinguisher selection by risk class — ABC dry powder, CO2, clean-agent, foam, water
  • Walk-through site assessment for placement and coverage
  • Wall mounting, stands, cabinets and photoluminescent signage
  • Refilling after discharge and scheduled servicing with pressure checks
  • AMC with tagged units and inspection-ready records
  • Supply of related fire-protection goods and accessories
Brand stack

Newage

Automatic Tube Fire Detection & Suppression

Automatic Linear Pneumatic Tube Detection systems — enclosure-level fire detection and suppression for electrical panels, server and network racks, battery enclosures and machine cabinets — operating standalone without external power, in direct- and indirect-discharge configurations.

Capabilities
  • Linear pneumatic heat-sensing tube detection inside enclosures
  • Direct-discharge systems — the tube ruptures and discharges at the hot spot
  • Indirect systems discharging through fixed nozzles
  • Clean-agent or dry-chemical agent selection by enclosure contents
  • Standalone operation — no external power, wiring or control panel
  • Pressure-switch monitoring to the fire-alarm panel where in scope
  • AMC: tube condition, cylinder weight and pressure checks

Intrusion Detection & Alarm

Intrusion and perimeter detection — door/window contacts, dual-tech motion sensors, glass-break, vibration and fence sensors, panic and alarm panels with app and central-station-ready monitoring — integrated with CCTV and access control.

Capabilities
  • Zoned detection design — contacts, dual-tech motion, glass-break
  • Perimeter and fence-line detection (vibration / fence sensors)
  • Panic, hold-up and tamper supervision
  • Retail EAS / electronic article surveillance — RF, AM or RFID exit pedestals with tag and label detach-and-deactivate at the till, integrated with CCTV
  • Alarm panels with app notification and partitioning
  • Central-station-ready monitoring interface
  • Integration with CCTV and access control
Brand stack

Honeywell, Bosch, DSC, Securico, Optex

Intercom & Video Door Phone

Intercom and video door phone (VDP) door-entry — audio and video door stations, indoor monitors, IP and 2-wire systems, lift and lobby intercom, apartment and villa door-entry — integrated with access control and mobile answer.

Capabilities
  • Audio and video door stations with night illumination
  • IP and 2-wire indoor monitors and call routing
  • Apartment, villa and multi-tenant door-entry
  • Lift and lobby intercom to facility desk
  • Mobile-app answer, view and door release
  • Integration with access control and door hardware
Brand stack

Syntel NEOS, Hikvision, Dahua, Grandstream, Cisco, NEC, Aiphone, Panasonic, 2N, Akuvox

Facial Recognition System

AI face-recognition for access, attendance and surveillance — face-based entry, watchlist and VIP/denied-entry alerts — integrated with CCTV and access control on a consent-aware, privacy-respecting deployment.

Capabilities
  • Face-based access and touchless attendance
  • Watchlist, VIP and denied-entry alerting
  • Enrolment, matching-threshold and liveness tuning
  • Integration with CCTV and access control
  • Consent-aware deployment and audit event log
  • On-premise template storage under client control
Brand stack

Hikvision, Dahua, Suprema

ANPR & Number-Plate Recognition

Automatic number-plate recognition for gate automation, parking and visitor logging — plate-read cameras with watchlist alerts, integrated with boom barriers and access control.

Capabilities
  • Plate-read camera placement to approach geometry
  • Barrier and gate automation on plate match
  • Parking and visitor-vehicle logging
  • Allow-list, watchlist and denied-vehicle alerting
  • Integration with boom barriers and access control
  • Day/night read tuning and event audit log
Brand stack

Hikvision, Dahua, Axis

— Building map · ELV intelligence board

Seven systems. One building.

Pick a system. The cross-section lights up its devices and cabling, drawing the head-end relationships in one glance.

Photoreal isometric cutaway of a reference 5-storey commercial building — basement plant room, retail ground floor with server room, lobby, offices and rooftop plant.
PTZ
Dome
NVR
Reference commercial building · cutaway demonstration

Building systems index

  • IP Surveillance · CCTV. Edge cameras across perimeter, lobby, corridors and lifts. NVR in the server room. Retention sized to 30–90 days. Recording continues on UPS during outages.
  • Access Control. Card / fingerprint readers on every restricted door. Magnetic locks fail-safe on fire alarm. Controllers daisy-chained to the access server in the server room.
  • Addressable Fire Alarm. Detector loop addresses every device individually. Cause-and-effect logic shuts dampers, releases mag-locks, homes lifts to ground. Panel in BMS / FCC room.
  • Public Address · PAVA. EN 54-16 voice-evacuation backbone. Zoned paging by floor / area. Fire-alarm event overrides routine paging instantly. Amplifier rack in server room.
  • IP-PBX · Voice. DID numbering, voicemail-to-mail, mobile twinning, hunt groups. Survivable branch path keeps voice live when the WAN drops.
  • Server / MDF Room. Climate-controlled enclosure for NVR, IP-PBX, AC server, switches and routers. UPS-backed; precision cooling; addressable detection inside the room.
  • Building Management System. Supervisory control over HVAC, lighting and sub-metering. Coordinated trips on fire-alarm cause-and-effect. Head-end in the FCC / BMS room.

/ Frequently asked

ELV — what people ask first.

Who integrates ELV systems across Northeast India under one contract?

TechnoGuru engineers fire alarm, CCTV, access control, PA, nurse-call, structured cabling and BMS interfaces as one accountable ELV contract from its Guwahati headquarters, with delivered references across Assam, Nagaland, Meghalaya and Tripura. One integrator owning the cause-and-effect logic is what closes the gaps that appear when each system is a separate vendor: the fire alarm that never tells the PA which zone to announce, the access door that stays locked on alarm, the CCTV that nobody wired to the incident log. Scope is engineered to NBC, IS and NFPA codes and agreed against drawings — coverage across the region runs from the Guwahati bench, not through branch offices.

What is ELV and why is it grouped together?

ELV (extra-low-voltage) covers fire alarm, CCTV, access control, PA, nurse-call, intercom, structured cabling, gate barriers and screening — grouped because they share pathways, controllers and cause-and-effect logic. Every safety and security service that runs at less than 50 V AC: fire alarm, CCTV, access control, PA, nurse-call, intercom, structured cabling, gate barriers and screening. They are grouped because they share installation pathways, share controllers in many cases, and need to be coordinated as one cause-and-effect system. Treating them as separate contracts is how integration gaps appear.

Are these systems mandatory under Indian building codes?

Most ELV systems are mandatory under NBC 2016 and IS codes for commercial, hospitality, healthcare and educational buildings above defined thresholds. Under NBC 2016 and the relevant IS codes, addressable fire alarm, voice-evacuation PA, hydrant networks and emergency lighting are mandatory in commercial, hospitality, healthcare and educational buildings above defined occupancy and height thresholds. CCTV is mandatory in regulated sectors such as banks, ATMs, malls and some institutional clients. We engineer to the code that applies and prepare the drawings the local fire and police NOC require.

How do you integrate fire, CCTV, access and PA into a single response?

Fire, CCTV, access and PA integrate through a written cause-and-effect matrix that is documented per building, programmed once and tested on commissioning. A written cause-and-effect matrix. On a fire-alarm event from a specific detector, the matrix triggers a sequence: lifts home to ground, magnetic door-holders release, PA announces the affected floor, BMS shuts AHU dampers, CCTV pre-records the area, and access control switches to evacuation mode. The matrix is documented per building, programmed once, and tested on commissioning.

What kind of CCTV retention is appropriate?

CCTV retention is 30 days for commercial, 60 days for hospitality, 90 days for healthcare and government, and 180 days where regulated. 30 days for most commercial buildings, 60 days for hospitality, 90 days for healthcare and government, 180 days where regulated. Storage is sized by retention × bitrate × camera count, not by the headline 'channels' number on a panel. We provide a written storage calculation in every CCTV quote.

What's an AMC for ELV systems and why does it matter?

An ELV AMC is a documented programme of preventive checks plus written response targets — without it, ELV systems silently degrade until they fail when needed. A documented programme of preventive checks (panels tested quarterly, batteries swapped on schedule, hydrant pumps load-tested annually, CCTV firmware updated on a calendar) plus response targets in writing. ELV systems silently degrade — batteries weaken, sensors drift, firmware needs patching. AMC is what keeps them genuinely working on the day they are needed.

How do you size CCTV camera count for a building?

CCTV camera count comes from a coverage plan against the architect's drawings — typically 18–28 cameras per 1,500 sq m commercial floor — not a procurement instinct. A coverage plan, not a procurement instinct. We mark every entry, exit, lift lobby, corridor junction, perimeter line and high-value zone on the architect's drawings, then assign camera type — fixed, varifocal, PTZ, panoramic — based on the field of view that zone actually needs. A 1,500 sq m commercial floor typically lands at 18–28 cameras; bigger numbers usually mean someone has confused coverage with reassurance.

What's the difference between IP and analogue CCTV in 2026 — does analogue still have a place?

IP CCTV is the default for any new install in 2026; HD-over-coax has only a narrow place where existing coax must be reused on small (under 16-camera) retrofits. IP is the default for any new install: higher resolution, smarter analytics, network-native, simpler cabling on Cat6A with PoE. HD-over-coax (HDCVI, TVI) still has a narrow place where existing coax must be reused and the budget cannot stretch to recabling. Below 16 cameras and on retrofit footprints, analogue may still pay back; above that scale, IP wins on every axis.

Do you handle the fire NOC and police licensing paperwork ourselves?

Yes — fire NOC and police licensing paperwork is part of our integrated scope, with drawings prepared to the format the local authority requires. As part of the integrated scope. Drawings prepared to the format the local fire authority requires, hydrostatic test certificates, hydrant flow tests, addressable panel commissioning logs, and the cause-and-effect matrix. For police licensing on regulated CCTV deployments (banks, ATMs, certain hospitality), we prepare the technical schedules the authority expects. The client signs; we deliver the supporting paperwork.

· Credential evidence behind ELV

Named, dated,
held on file.

See the full register
  • Fire & Security Association of India Individual Member certificate issued to Pranab Kumar Beriya, valid 06/2024 to 06/2027

    Fire & Security Association of India

    FSAI Individual Member

    Issued June 2024

  • Prolite Autoglo Limited Certificate of Training in Egress / Exit Route Lighting Systems & Photoluminescent Signage awarded to TechnoGuru — Pranab Kumar Beriya, 02 May 2015

    Prolite Autoglo Limited

    Prolite Autoglo — Egress / Exit Route Lighting & Photoluminescent Signage Training

    Issued May 2015

Personal designations sit alongside the practice’s ISO 9001:2015 and ISO 10002:2018 certifications. We do not claim any vendor authorisation we do not hold; brand-authorisation letters are listed separately on /credentials.

· Begin

Bring the brief.
We’ll bring the discipline.

The first reply will come from a project lead, not a sales gateway, within two working days.