Are you trying to figure out which appliance is running up your energy bill? A power meter that shows real-time numbers on its own screen can remove the guesswork. The SONOFF LCD Smart Power Meter Switch does exactly that, and it also tracks historical usage. At USD 17.99, it's worth a closer look if you want a straightforward way to monitor high-power devices.
Quick verdict
The SONOFF LCD Smart Power Meter Switch combines a clear LCD readout, Wi-Fi connectivity, and a 20A max rating in one compact unit. You get real-time power, voltage, current, and cumulative energy readings on the device, plus a six-month usage history with hourly accuracy that you can export to Excel. The built-in overload protection adds peace of mind when you're running demanding appliances like heaters or lighting systems.
Who it suits
This switch is a good fit if you want to keep an eye on a single major appliance and don't want to rely on an app to see the current draw. Because the display is on the unit itself, you can check power consumption at a glance. The universal compatibility and white finish make it easy to place in most settings. If you like having data to review, the exportable six-month history gives you a practical way to analyze energy habits over time.
What stands out from the listed details
The LCD screen is the first thing you'll notice. It shows multiple readings directly on the switch, so you don't need to open a dashboard to get the essentials. The six-month power usage history is recorded with hour-level accuracy, which is more detailed than simple daily totals. That data can be exported to Excel for further review. The 20A rating means it can handle substantial loads, and the overload protection function is a useful safeguard. The casing is made of PC V0 material, which points to a flame-resistant design.
Meaningful trade-offs
The switch connects via Wi-Fi, but the available information doesn't spell out which app or smart home platforms you can pair it with. If you were hoping for voice assistant control or integration with a full smart home system, you'll need to use the SONOFF ecosystem or check the manufacturer's guidance. Also, this is a single-switch device, so you'll need one unit per appliance if you want to monitor multiple circuits. The physical size is listed as 98x54x31mm, so it's compact but not zero-profile.
Bottom line
For shoppers who want an affordable, readable power meter with useful history tracking, the SONOFF LCD Smart Power Meter Switch at USD 17.99 delivers. It puts real-time data in front of you, records usage for six months, and includes overload protection. If you need a smart switch that shows you the numbers without any guesswork, this SONOFF model is a solid option.
SONOFF LCD Smart Power Meter Switch 20A Max Power Monitoring Overload Protection
Choose this switch if you want a clear LCD readout and long-term usage history in a single device. The 20A rating and overload protection make it suited for heavier loads. Just remember it's a single-switch solution, so you'll need more than one if you want to monitor several appliances.
