A $6 Smart Plug That Actually Monitors Energy Use - Worth It?

The Problem With Smart Plugs Under $10

Most cheap smart plugs do one thing: they turn stuff on and off remotely. That's it. You pay for the WiFi chip and a relay, and you get an app that may or may not work in two years. I've been down that road a few times.

So when I came across this Tuya WiFi/Zigbee plug with built-in energy monitoring for around $6, I did not immediately click buy. I went looking for reasons it might be junk. What I found instead was a surprisingly capable device with real users, confirmed integrations, and a price that makes almost no sense relative to what it delivers.

Honest Review: What This Plug Actually Does

The headline feature here is real-time power monitoring. This is not just a remote switch - it shows you live wattage draw from whatever device is plugged into it. That matters if you want to know whether your old refrigerator is costing you more than a new one would, or whether your space heater is actually pulling the watts the label claims.

It runs on both WiFi and Zigbee 3.0. The Zigbee support is genuinely useful: if you already have a Zigbee hub (like an IKEA Dirigera, a Philips Hue Bridge, or a Sonoff Zigbee dongle), this plug connects directly to it, which means faster response times, lower load on your WiFi network, and better reliability in general. If you have no hub, WiFi works fine through the Tuya or Smart Life app.

Alexa and Google Home compatibility is confirmed by actual users, not just a marketing claim. One reviewer from Belgium who owns three of these says they work like clockwork. A French reviewer explicitly confirmed Home Assistant integration, which is meaningful - Home Assistant is unforgiving with unreliable devices, and this one passed.

The 16A/20A rating is also higher than the 10A or 13A you typically see on budget plugs. You can safely run higher-draw appliances without worrying about the plug becoming the weak link.

What surprised me positively: Tuya's ecosystem has genuine staying power. Unlike some white-label Chinese apps that disappear, Tuya is a major platform with an established cloud and a strong local-control community.

The real con, stated plainly: first-time setup can be annoying. The Tuya app requires account creation, specific WiFi settings (2.4GHz only, not 5GHz), and the pairing process has been known to require a couple of attempts if your phone does not cooperate. Worth noting that the manual is minimal and often in English or Chinese only. If you are new to smart home devices, budget 20 minutes for setup, not 2.

What Would You Normally Get at This Price?

At $6, in a physical store, you are looking at a mechanical timer plug with no app, no remote control, nothing smart about it. On Amazon, a basic WiFi plug from an established brand like TP-Link Kasa or Amazon's own line starts around $15-25 for a single unit - and most of those do not include energy monitoring.

This plug has energy monitoring, Zigbee dual-protocol support, 20A capacity, and confirmed compatibility with the major voice assistants and Home Assistant. At $6, that combination does not exist elsewhere. The trade-off is that you are buying from a third-party seller on AliExpress, not from a local retailer with a return desk three blocks away.

Buy It If / Skip It If

Buy it if:

• You already use Tuya, Smart Life, Alexa, Google Home, or Home Assistant
• You want to monitor the actual energy consumption of specific appliances
• You have a Zigbee hub and want a reliable, affordable node to add to your mesh
• You are willing to spend 15-20 minutes on initial setup

Skip it if:

• You have never set up a smart home device and want something truly plug-and-play out of the box
• You need official certifications for professional or commercial installations
• You want a physical local return option if something goes wrong

My honest take: this is a strong buy for anyone already inside the smart home ecosystem. The energy monitoring alone makes it worth more than its price. For complete beginners, the setup friction is real, but it is a one-time thing.

Current price is around $6 (down from about $12) with a 50% discount active now:
https://www.ali-ex.com/c04yPy