Mine has saved me over $1000 a year since I got WattSage. I ran my own energy audit and unplugged everything that was quietly wasting money. Best purchase I've made for this house.
Maria S.Verified Buyer
WattSage ™
Regular price
$139.99
Regular price
$139.99
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Under-Desk Cable Management Kit
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How It Works
How It Works
- Plug WattSage directly into any wall outlet.
- Plug your appliance into WattSage.
- Read live energy data instantly on the bright LCD display.
What's Included
What's Included
- WattSage Energy Monitor
- Retail Packaging
Shipping & Returns
Shipping & Returns
We offer free shipping for all orders. Once your item/s is dispatched,
the estimated delivery time is:
- USA: 2-9 business days
- UK: 5-13 business days
- Australia: 5-13 business days
- Canada: 2-12 business days
- Europe: 5-13 business days
You have 90 days to return your product for a full refund (return shipping is covered by the customer; defective items ship a free replacement).
Official Authorized Retailer
This product is not available on Amazon or eBay. You are purchasing directly from the only authorized seller — which means full warranty, verified authenticity, and dedicated customer support. Beware of counterfeit listings on third-party marketplaces.
WattSage
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Built For Accuracy That Actually Lasts
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Accuracy You Can Actually Rely On
WattSage samples real voltage and current at the outlet, not a label estimate. See true wattage, not a guess, for every appliance you plug in.
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One Display Four Key Readings
See wattage, voltage, current, and frequency at a glance. One display gives you the complete electrical story of your home.
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Instant Cost Insights
WattSage turns live wattage into a running dollar cost. Most home energy audits uncover $100 to $300 a year in easy fixes.
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Plug And Play In Seconds
Just plug it in and start monitoring immediately. No apps, no wiring, no professional installation required.
What our 17,000+ Customers say
Based On Real and Honest Experiences
I plugged WattSage into my PC to see what it really pulled during long sessions, and it read about 69 watts at idle, way less than I assumed. Now I check it before every new build.
James T.Verified Buyer
My last cheap watt meter sparked and died within months. WattSage has been plugged in daily for over a year now and still reads spot-on next to my utility bill. Worth paying a bit more for something that actually holds up.
Renata K.Verified Buyer
Frequently Asked Questions
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+347 experts reviewed it
as the best choice in 2026
+347 experts reviewed it
as the best choice in 2026
Q1 Does the reading reset if I unplug it or lose power?
Like most plug-in meters, WattSage resets its running total when unplugged. Leave it connected for your full test window, whether that is a day, a week, or a full billing cycle, so the total reflects real usage.
Q2 What's the max load it can handle before it fails?
WattSage handles up to 15A on US plugs and 16A on EU plugs, enough for fridges, heaters, and most single appliances. Stay within that rating and it's built to hold up, not spark out.
Q3 How accurate is WattSage for low-power devices like phone chargers?
Like all plug-in meters, WattSage reads low-wattage electronics such as phone chargers closely, typically within a few percent of a lab reference. Readings get even tighter on steady, higher-wattage loads like heaters or fridges.
Q4 How do I turn the readings into an actual monthly cost?
Read the kWh WattSage displays, multiply by your utility's rate per kWh (check your bill), then scale to a month. Leave it running a few days on one device for the most accurate monthly estimate.
Q5 Why is WattSage priced below other name-brand meters?
You're not paying for less accuracy, just less bulk. WattSage keeps the trusted core design that's measured devices for years, while adding a brighter display and simpler controls that older meters skip.
Q6 Does it work with 220V systems?
WattSage supports 110V to 250V, matching standard outlets in most countries. Heavy appliances like electric dryers or ovens need dedicated high-amp outlets it isn't built for, but everyday 220V-240V devices work fine.
Q7 Can I use it on my refrigerator or AC that cycles on and off?
Fridges and window AC units are actually the best use case. Leave WattSage plugged in for a day or two to capture every on/off cycle, then read the accumulated total for a true average.
Q8 Is WattSage a good gift for a new homeowner?
Yes. It's a practical, unexpected gift that helps them get a baseline on every appliance in a new place, from the fridge to the water heater, before surprise bills show up. Easy to use with zero setup, so anyone can start right away.
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Reviewed Top 1 in 2026