Category creatorDELTAFOUR® created the Bluetooth-enabled Smart LOTO® category for industrial use.Read the story

What 60,000 digital permits taught us.

Findings from Smart LOTO® and Digital PTW deployments across India’s steel plants — the before-and-after data, the seven-step rollout playbook, and five insights for CXOs.

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78%
reduction in permit turnaround time
73%
reduction in group LOTO turnaround
33 min
saved per lockout
~70%
fewer physical locks needed

Figures from DELTAFOUR® steel deployments, as reported in the study.

Words we introduced to industrial safety.

Coined by DELTAFOUR®
Connected Safety Intelligence®

The intelligence layer DELTAFOUR® brings to industrial safety: purpose-built LOTO hardware, a complete EHS platform and AI agents sharing one live record — so every lock, permit, person and risk is visible, verified and acted on in real time.

Category we created
Smart LOTO®

Bluetooth-enabled lockout-tagout built for industrial use: personal digital keys, permit-bound locks and a complete audit trail.

Connected Energy Isolation™

Isolation where every source, lock and verification step is linked to a person and a permit.

1-Man-1-Lock-1-Digital Key®

Every worker carries their own protection — enforced by the lock, not by memory.

Lockout-Tagout-Tryout

Isolation is not complete until zero energy is verified and recorded.

Whitepapers, case studies, guides and more.

19 resources
Choose a topic
Guide & eBookLOTO basics

What is lockout-tagout (LOTO)? A plain-English guide

Energy sources, the six steps, lock vs tag and where paper LOTO fails.

9 min readDownload →
Guide & eBookSmart LOTO®

What is digital LOTO? How Bluetooth lockout works

The padlock, the digital key and the live permit record, step by step.

8 min readDownload →
Guide & eBookCompliance

OSHA 29 CFR 1910.147 in plain English

What an energy control program needs, from procedures to contractors.

10 min readDownload →
BlogContractor safety

Contractor lockout: verifying who holds the lock

Face-verified personal lockout for contractor crews.

6 min readRead →
WhitepaperCategory

Smart locks vs Connected Safety Intelligence®

Why industrial lockout needed a new category — and what separates a connected padlock from a connected isolation system.

18 min readDownload →
Case studySteel

What 60,000 digital permits taught us

Before-and-after data and the rollout playbook from India’s steel plants.

Report · 24 pagesRead →
WhitepaperIndustry

The state of digital LOTO in Indian heavy industry

Where steel, cement, metals and FMCG plants stand on isolation — and what the leaders do differently.

22 min readDownload →
BlogField notes

Seven ways paper LOTO fails — and how to see them coming

Shared keys, missing try-outs, unread tags: the failure modes we see on every plant walk.

7 min readRead →
Guide & eBookRollouts

From 1 plant to 10 in 30 days

The enterprise rollout playbook: pilot, standardise, train the trainer, then go parallel.

eBook · 16 pagesDownload →
Case studyCement

Maha Cement: three plants, one isolation standard

How MCW, YCW and Vizag moved to Digital PTW and Smart LOTO® together.

9 min readRead →
WhitepaperAI

AI agents in EHS: what SENTRY™ learns from reviewing permits

The patterns behind permits that close late or unsafely — and how agents catch them first.

15 min readDownload →
BlogHow it works

Group lockout without the hasp

The virtual lockbox explained: whole crews, one isolation point, zero hasps.

6 min readRead →
Guide & eBookBuyers

Digital PTW buyer’s guide for heavy industry

The 20 questions to ask any permit-to-work vendor — and why LOTO integration is the first.

eBook · 20 pagesDownload →
Case studyMetals

IMFA iSAFE: building an EHS command centre

Unifying incidents, inspections, compliance and isolation at Paradeep.

8 min readRead →
WebinarSteel

Isolation at scale: steel industry webinar

Plant leaders on moving thousands of isolations a month off paper.

On demand · 45 minWatch →
BlogPractice

Why the try-out step gets skipped

And how to make it impossible to skip without slowing the job down.

5 min readRead →
Template & toolFree

LOTO gap assessment checklist

Score your isolation practice against OSHA 29 CFR 1910.147 in an hour.

Template · XLSXGet it →
Template & toolFree

Smart LOTO® ROI calculator

Estimate time, lock and downtime savings for your plant.

Interactive toolGet it →
WebinarAI

AI-first EHS: from forms to agents

A live walkthrough of auto-audits and auto-documentation.

On demand · 30 minWatch →

Innovations that define the category.

Hardware · Patented
Bluetooth padlock built for LOTO

The lock that created Smart LOTO®.

Hardware · Patented
Digital LOTO Station

Locks issued only against a live permit.

Workflow
Virtual lockbox

Whole crews lock on digitally to one isolation point.

Hardware
Industrial QR line confirmation

Scan to prove you’re at the right point.

Device
Shift tablet with company apps

Your safety apps, handed over every shift.

AI agent
SENTRY™

Reviews every permit before approval.

AI platform
HELIX™

Real-time safety alerts from plant data.

AI agent
Doclytics™

Paper permits and SOPs, made searchable.

The Isolation Brief

Field data, new research and what’s next in Connected Safety Intelligence® — for safety heads, plant heads and maintenance leaders.

Our mission

Ensuring Everyone Returns Home Safe®

It’s what motivates us every day, in everything we do.

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