10 Best Kill A Watt Meters 2025 in the United States

The Upgraded Watt Power Meter Plug by MECHEER is a solid tool for monitoring and managing home electrical usage. It offers various monitoring parameters, including power, energy, volts, amps, and more, which makes it suitable for tracking the consumption of different appliances. The device features an upgraded LCD display with a large screen and adjustable backlight time, ensuring clear visibility under various lighting conditions. The backlight can be set to stay on from 10 minutes to always on, which is convenient for extended monitoring sessions.

One standout feature is its overload protection, which warns users when the appliance exceeds a set power limit, thus preventing potential damage. Additionally, the data memory function retains your consumption data even after the meter is unplugged, which is handy for long-term monitoring without losing any records. However, the product lacks connectivity options like Wi-Fi or Bluetooth, which means you cannot remotely monitor or control the data via a smartphone app. This may be a downside for users looking for more advanced features in a smart home setup.

The ease of use is relatively high, with straightforward buttons and clear instructions, but the initial setup to adjust settings like backlight time and overload protection might require some patience. This power meter is ideal for those who want a reliable and easy-to-read device for basic electricity monitoring without the need for advanced connectivity features.

This upgraded watt meter is a versatile tool for monitoring home electricity usage. It offers multiple measurements including power (watts), voltage, current, frequency, power factor, and even calculates electricity cost, which is great for users wanting detailed information on their appliance energy consumption. The backlit LCD makes it easy to read data day or night, and the 8 display modes help you switch between different measurements smoothly. It has built-in overload protection that alerts you if the connected device uses more than 1800W, which adds a layer of safety. The device also remembers your cumulative energy data and settings even if unplugged or during power outages, so you don’t lose your tracking history.

It’s made from fire-resistant, durable material and supports standard US plugs, fitting most home appliances. Resetting data is simple, done by holding a button for 5 seconds, so it’s user-friendly even without technical skills. This product suits homeowners or casual users who want an easy-to-use, reliable monitor to track energy use and costs without needing complex tech features.

The SURAIELEC Watt Meter is a useful tool for monitoring and reducing your energy costs. It's capable of tracking energy usage in real time and automatically calculates the cost based on your electricity rates. This is particularly beneficial for identifying high-energy appliances and making informed decisions to save on your power bill. The large backlit display is a standout feature, making it easy to read the measurements even in low-light conditions. This is convenient for use in basements, garages, or during nighttime hours.

The device also includes a 90-day data memory, which is helpful in maintaining usage records even during power outages, thanks to its built-in battery backup. Overload protection adds an extra layer of safety, especially for high-energy appliances like TVs and AC units. The compact design ensures it doesn't block adjacent outlets, which is great for maintaining usability of nearby plugs. Its professional-grade accuracy, certified with ±0.1W precision, ensures reliable readings for devices up to 1,950W.

However, it does lack advanced connectivity features such as Wi-Fi or Bluetooth, which might limit remote monitoring or integration with smart home systems. Additionally, while it logs data for up to 9,999 days, it may not offer advanced data analytics that some users might find useful. The requirement of three A batteries might be seen as a minor inconvenience. The SURAIELEC Watt Meter is a practical choice for those needing a straightforward, accurate, and easy-to-read energy monitoring device.