We didn’t enter the category. We created it.
The first Bluetooth-enabled lockout-tagout system for industry, invented in India.
Smart LOTO® (digital lockout-tagout) is an energy-isolation system in which Bluetooth-enabled padlocks, personal digital keys and software replace physical keys, hasps and paper tags — so every isolation is tied to a named person, linked to its permit, verified before work, and recorded end to end.
DELTAFOUR® created the Bluetooth-enabled Smart LOTO® category for industrial use, and holds 5 utility and 4 design patents covering its lockout-tagout hardware and connected architecture.
We created the category. Nine patents protect it.
Before DELTAFOUR®, “smart locks” were consumer gadgets.
From a smelter floor to 170+ manufacturing plants.
Our founder runs heavy plant operations at BALCO and sees how paper checks delay work and put lives at risk.
The first Bluetooth padlock and connected system built only for industrial LOTO.
Smart LOTO® goes live in heavy industry.
5 utility and 4 design patents across the Smart LOTO® padlock, Digital LOTO Station and connected system.
15+ enterprise customers. Expanding into the Gulf.
Ensuring Everyone
Returns Home Safe®
Industrial experience behind every line of code.
A 28-member team across engineering, product, sales, deployment and customer success — led by plant safety and automation leaders with 40+ years at ABB and BALCO.
Managed heavy plant operations at BALCO. Saw first-hand how paper safety checks cause dangerous delays and real risk to life.
Helped build ABB’s early safety leadership, including its first Safety Manager and safety practices across projects.
Advised by industry leaders.
Team and culture
High-growth team.
Hyper-growth mindset.
We keep bringing new innovations to industrial safety, Ensuring Everyone Returns Home Safe®.
Different ambitions. All together.
One mission
Backed by people who run the plants we protect.
Institutional investors and angels who chose to back DELTAFOUR®.
Angel investors
Pranav D. BhanageAPAC Director, DSS+ · ex-CEO, Petronas LubricantsDeepesh HindujaDirector, QVIA JapanRanjit ChughCEO, IACL · ex-COO, PPL ParadeepNeerajAngel investorSandeep BalajiAngel investor Biswa Bhushan RathAngel investorVikas AggarwalAngel investorBhawna BhatnagarAngel investorMahesh GaurAngel investorMili SrivastavaAngel investor