Introducing ThenWatt
ThenWatt is an ecosystem of devices that mirror each other through one universal signal: power. When electricity reaches one device, its partners act instantly — bulbs light, switches flip, plugs respond. No rewiring. No hub. No app. No internet. Ever.
The idea
Everything electric in your home already says something the moment power reaches it: I'm on. A ThenWatt sender listens for that moment — you flip a wall switch, your garage door opener wakes its courtesy light, a switched outlet comes alive — and broadcasts it by radio to every receiver you've paired. Receivers act in the blink of an eye: bulbs light, switches close circuits, plugs power whatever they hold. One action here is mirrored everywhere you choose.
A sender detects the presence of power at its socket. That's the trigger. No motion sensors to fool, no schedules to program, no app to open.
Paired receivers mirror it instantly — bulbs turn on, a switch powers a whole circuit, a plug runs whatever's connected to it. When the sender loses power, everything follows it off.
How it works
Put a ThenWatt bulb where the power already comes and goes — the fixture on your wall switch, or your garage opener's light socket. It's a great bulb on its own.
Screw receiver bulbs into the fixtures you want to follow along — pull chains just stay on. Or install a ThenWatt switch to bring an entire circuit with you.
A simple press-to-pair, right on the devices. No app, no account, no Wi-Fi password. They remember each other for life — even through power outages.
What people use it for
Your opener's courtesy light barely lights the hood of your car. Put a sender in that socket and a ThenWatt switch on the wall — the moment the door starts to open, every garage light comes on with it.
One switched fixture at the stairs, and a maze of pull-chain lights beyond it. Sender at the stairs, receivers in the chains. Flip one switch at the top — the whole basement is lit before your foot hits the second step.
Stop crawling toward a dangling string in the dark. The switch you already have at the hatch now runs every fixture up there.
Tool corner, bench lights, the back wall nobody wired. One switch by the door brings the whole shop to life — and shuts it all down when you leave.
No Wi-Fi out there? Perfect — ThenWatt never wanted it anyway. Devices talk directly to each other, hundreds of feet apart, internet optional. Forever.
Off-grid, off-cloud, off the subscription treadmill. ThenWatt works the same on day one and day ten-thousand, with or without a connection to anything.
Our promise
Smart home products keep breaking an old promise: that the things you buy keep working. Servers shut down. Apps stop being updated. Features move behind subscriptions. ThenWatt is built the other way around.
Under the hood
A light that "usually" follows isn't a product — it's a gimmick. ThenWatt is engineered like infrastructure, because that's what your lights are.
From power-on to every receiver responding. It doesn't feel fast — it feels wired.
A dedicated long-range mode reaches across basements, driveways, and out to detached buildings — far beyond ordinary smart bulbs.
Every message is cryptographically signed. Your neighbor's gadgets can't flip your lights — and neither can anyone else.
Redundant signaling and a vigilant watchdog keep receivers steady at the very edge of range, through interference and power blips.
The ecosystem
Every ThenWatt device speaks the same language, so anything that senses power can drive anything that switches it. Bulbs and switches are the first members of the family — not the whole family.
The heart of the system — a bright, efficient LED bulb that can play either role. As a sender it announces when its socket gets power. As a receiver it follows any sender you pair it with.
A receiver that controls a whole circuit. Pair it to a sender and the lights it's wired to respond together — the easiest way to bring existing fixtures into the system, no bulb swaps needed.
The same idea, at any outlet. In sender mode, plug it into a switched outlet — the kind your wall switch already controls — and it announces the moment that outlet gets power, exactly like the bulb does in its socket. In receiver mode, plug it into any always-on outlet and it powers whatever's plugged into it the instant a paired sender — bulb, switch, or another plug — comes on.
ThenWatt launches soon. Leave your email and we'll tell you once — when it's ready. No newsletter-every-Tuesday nonsense. That would be deeply off-brand.
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Questions
No. ThenWatt devices communicate directly with each other over their own encrypted radio link. They never touch your router, your phone, or the internet. A home with no internet service gets the exact same experience.
No, and that's a feature. Setup is a physical press-to-pair on the devices themselves. There's no account to create, nothing to download, and nothing that can be discontinued out from under you.
Plenty for any room in a house — a single sender can drive a whole basement or garage full of receivers at once, and every ThenWatt device speaks the same language, so future senders and receivers join the same pairings.
Leave the chains on, screw in receiver bulbs, and never touch the chains again. The wall switch (via the sender) now runs them all.
Nothing to worry about. Pairings are stored permanently in each device. When power returns, everything picks up exactly where it left off — no re-setup, no resync, no app required.
Never. You buy hardware; it works indefinitely. Our revenue is the box you bought, not the box you bought held hostage.