Category creatorDELTAFOUR® created the Bluetooth-enabled Smart LOTO® category for industrial use.Read the story
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Hardware, purpose-built for industrial lockout-tagout (LOTO).

Devices we designed for one job: isolating hazardous energy. Patented: 5 utility and 4 design patents.

Configure the padlockOpen the station
SMART LOTO®by DELTAFOUR®SMART LOTO®by DELTAFOUR®SMART LOTO®by DELTAFOUR®SMART LOTO®by DELTAFOUR®SMART LOTO®by DELTAFOUR®SMART LOTO®by DELTAFOUR®SMART LOTO®by DELTAFOUR®Shift 06:00 to 14:00SMART LOTO®by DELTAFOUR®Digital LOTO StationSmart LOTO® padlockShift tabletQR & NFC tags
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The patented Bluetooth padlock, purpose-built for industrial LOTO.

Compatible with every type of energy source. It knows who applied it, which permit it protects and when it may come off.

ElectricalMechanicalPneumaticHydraulicThermalChemicalGravity & stored
● Design patented● Utility patented
LT panel · 415 V AC · breaker lockoutLocked · zero energy verified
LT PANEL · 415 V ACCOMPRESSED AIR · 6 BARPROCESS LINE · BALL VALVESTEAM LINE · GATE VALVEEQUIPMENT PLUG · 480 V25B-1059SMART LOTO®by DELTAFOUR®
Illustrative render · not to scaleClearance 38 mm · Ø 6.35 mm
Choose yours: colour, shackle and energy source

Body colour · Safety red

Shackle material

Cut-resistant hardened steel — the default for mechanical isolation.

Shackle clearance

Shackle diameter

Energy source

App record · live
Lock
Smart LOTO® · 25B-1059
Applied by
Electrical crew · 06:42 IST
Energy
Electrical · 415 V AC
Permit
PTW-2026-0451 · Live
Bound to one person

Opens only for the worker who applied it — 1-Man-1-Lock-1-Digital Key®

Bound to the permit

Can’t be removed while its permit is live or before sign-offs clear.

Every event on record

Apply, verify and remove — attributed and time-stamped over Bluetooth.

Built for the floor

IP66 body, colour-coded by trade, engraved serials on every shackle.

The world’s first Digital LOTO Station.

One-stop access to every Bluetooth LOTO lock and the shift tablet.

✓ All Bluetooth locks in one place✓ Charges every lock at once✓ Docks the shift tablet✓ Issues only against a live permit✓ Audits every return
● Design patented● Utility patented
DIGITAL LOTO STATIONDELTAFOUR®Your logo here“Zero harm. Every shift.”
Door closed · open it to issue locksIllustrative render
Open the door, then tap a lock to issue it

Door

View

Cabinet colour

Your logo on the cabinet

Your safety quote

PTW-2026-0451 · station log7 docked · 3 on the floor
Permit approved · locks available
Lock 09 issued to Contractor crew · PTW-2026-0451
Lock 06 issued to Mechanical crew · PTW-2026-0451
Lock 03 issued to Electrical crew · PTW-2026-0451
Permit-gated release
No approved permit, no lock.
Connected bays
Wired to the on-board controller.
Knows every lock
Docked, issued or applied.
Wall-mount or carry
Steel cabinet with handle.

QR codes and NFC tags for every isolation point.

Polycarbonate for indoor isolation points. Stainless steel and aluminium for outdoor energy sources.

QR codesIndoor and outdoor. Choose material, size, logo and label below.
NFC tagsUsed only for specific purposes.Speak to our experts
MCC-03 415 VDELTAFOUR®SCAN BEFOREISOLATINGEQ-RM-204Main isolator
Indoor · Polycarbonate75 × 75 mm
Choose yours: material, size, logo and label

Material

For indoor isolation points: panels, MCCs and switchgear. Applied with industrial adhesive.

Tag size

Mounted on

Logo on the tag

Label

One shift device. Your company’s own safety apps.

A managed tablet or mobile handed over at every shift change, running the DELTAFOUR® apps your plant needs — plus company-specific apps built on the same platform.

Pick an app to open it
DELTAFOUR® · Shift A · Raw MillOnline
Isolation
My active isolations
Raw Mill Drive · EQ-RM-204
4 personal locks · zero energy verified
Locked
Kiln ID Fan · EQ-KL-118
Awaiting try-out
Verify
Coal Mill Feeder · EQ-CM-031
Restored 06:10
Cleared

Hold the lock that started the category.

Our mission

Ensuring Everyone Returns Home Safe®

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

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