Voltrex Technology
⚡ Embedded Hardware & Offline Systems · Karachi & Hyderabad

We build hardware and software that solve problems you actually have.

Voltrex Technology designs small, practical systems — a sensor board paired with the app that reads it — starting with the everyday reality of unreliable power in Pakistan.

Explore Roshni About us
voltrex-esp32-core // live-telemetry
● Live Telemetry Engine

// Boot sequence complete. Zero cloud latency.

[BOOT] ESP32-WROOM-32D initialized (240MHz)

[SENSOR] ADS1115 calibrated on I2C 0x48 (500A/75mV Shunt)

[LOCAL] AP: Roshni-Setup-4F92 | IP: 192.168.1.42 (0ms cloud delay)

[STATE] Battery 52.4V | Draw: 18.5A (970W) | Discharge: 3h 42m

STATE OF CHARGE
84%
ACTIVE LOAD
970 W
FEEDER STATUS
Airport Feeder · Outage in 6h 41m

Small team, real hardware.

We're not a big lab — we're building products the way we'd want to use them ourselves: offline where possible, local instead of cloud-dependent, and paired with hardware you can actually wire into your own setup. Roshni started because load-shedding schedules were a mess to track; it grew into an app and a companion sensor board we designed ourselves.

Hardware we design

Our own sensor boards, built and wired in-house — not off-the-shelf white-label kits.

Apps that match

Every board ships with software built specifically for it — no generic dashboards.

Built for here

Designed around real conditions in Pakistan first — not adapted from somewhere else.

Featured Product

Products

Roshni is our first product, live today. More hardware is on the way.

Live · Flagship product

Roshni

Load-shedding tracker for Karachi (K-Electric) and Hyderabad (HESCO), with native offline alarms and an optional ESP32 battery monitor for your UPS or solar setup.

Explore Roshni
Roshni app showing feeder status and countdown
Almost ready

Roshni hardware companion

The ESP32 battery sensor board is on its last step — enclosure design is done, we're just waiting on PCBs to arrive. Get in touch now and we'll set you up as soon as it's ready.

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ESP32 PWR

Get in touch

Questions about Roshni, interested in a custom hardware setup, or just want to say hello — send us a message.

Contact us