Pre-launch · pre-booking open

Your water tank, running itself.

Wireless tank-side sensor. Auto motor on/off. Overflow and dry-run alerts. 2.5–3 year battery. Installs in 30 minutes.

  • 2.5–3 yr battery
  • 30-min install
  • Works on WiFi outage
  • App alerts
Live · pre-bookings
150already pre-booked
Pre-book free
Onwords Water Tank Automation — wireless sensor and pump controller

The wireless advantage

Zero drilling. Zero roof wiring. Zero compromise.

The three things that block every wired tank controller — gone. Mount the sensor on the tank, plug the hub into a wall socket, pair, done.

0
cables across the house
0
power points on the roof
0min
from start to running
0%
works on retrofit homes
Traditional · wired
Float switches, V-Guard, Crompton
  • 2- or 3-core cable from roof tank to motor
  • Mains power point needed on the roof
  • Drilling, conduit, repainting, two visits
  • Often impossible to retrofit cleanly
Onwords WTA · wireless
Battery sensor + LoRa hub
  • Zero wires on the tank side
  • Battery sensor — 2.5 to 3 year life
  • 30-minute install, single visit
  • Mounts on any tank, retrofit or new build

How it works

Two boards. One job. Done in 30 minutes.

Tank-side sensor
Step 1

Tank-side sensor

Sealed, battery-powered Wio-E5 LoRa sensor. Reads level, triggers low-water and overflow alerts. 2.5–3 year battery. No wires across the house.

Indoor hub
Step 2

Indoor hub

Heltec ESP32 + SX1262 hub plugs into a wall socket near the motor. Drives the relay locally — works even if WiFi is down.

App + alerts
Step 3

App + alerts

Live tank level, motor status, overflow / low-water alerts. Switch to manual control from anywhere.

What it does

Built for daily life.

Every drop accounted for. Every motor cycle automated. From the moment your tank fills to the moment you check the app.

Wireless control — Anytime, anywhere.
Wireless control

Anytime, anywhere.

Live status and remote control from your phone, no matter where you are.

Quick setup — No-hassle installation.
Quick setup

No-hassle installation.

Mount sensor, mount controller, connect & go. Three steps, thirty minutes.

Live & accurate — Real-time monitoring.
Live & accurate

Real-time monitoring.

Every change in the tank — visible the moment it happens.

Smart alerts — Total peace of mind.
Smart alerts

Total peace of mind.

Low water, abnormal usage, system issues — pinged the second they matter.

Auto control — Smart flow. Automatic action.
Auto control

Smart flow. Automatic action.

Motor on/off, dry-run protection, smart scheduling — all handled for you.

Usage insights — Understand. Optimize. Save.
Usage insights

Understand. Optimize. Save.

Trend tracking, smart reports, efficiency scores. See where every drop goes.

Why wireless wins

Designed to be forgotten for 3 years.

Float switches and wired controllers ask you to drill, run cables, and put power on the roof. WTA does none of that.

Pump motor with wireless controller

Works during WiFi outage

LoRa link is fully local. The motor still runs even when your internet is down.

2.5–3 year battery

Microamp-level deep sleep. Service team replaces it in 5 minutes when due.

Long-range LoRa

≈69 dB of margin. Works through three concrete walls and a wet RCC roof.

Overflow & dry-run alerts

Instant push notifications. The motor gets a hard cut-off the moment it should.

Retrofit-friendly by default

No civil work, no rewiring, no broken tiles. Works on existing finished homes as easily as new builds.

Onwords install + service

Same field engineers as our gate and smart-home installs. Local service in Coimbatore, Chennai, Bengaluru.

Pre-book

Lock your launch slot.

No payment now. We confirm install slots within 24 hours and prioritise pre-bookers when production hardware ships.

Live · pre-bookings
150already pre-booked
What is included
  • Wireless LoRa tank sensor
  • WiFi hub + relay driver
  • Onwords app + push alerts
  • Professional install
  • 1-year warranty
Same Onwords install team that handles 6,000+ gates and 400+ smart homes.
City
Tank capacity

We will call within 24 hours to confirm your slot. No payment now — pre-booking is free and locks your spot for launch.

FAQ

Things people ask before they pre-book.

WTA is a wireless system that automatically turns your motor on when the tank is low and off when full. A battery-powered LoRa sensor sits on the tank; a small WiFi hub near the motor handles control and sends alerts to your phone.

Onwords WTA — sustainable water automation

Save water by default.

A hard-cut at 100% means no overflow puddles in your driveway and no quietly running pump at 3 a.m.