You may find the need to explore the different types of wattmeters available in the market today before narrowing down your choice of a standard wattmeter. So if you know about the different types of wattmeter, below are provided some tips that will help your purchasing decision while purchasing a kWh meter from a trusted manufacturer.

Go for a cheap, cross-needle Putt-Putt wattmeter if you want a measuring instrument that protects from the inverse attenuation effect.

Use the plug-in wattmeter to measure the power of a single appliance or at a specific outlet. Around your office or computer rooms, this instrument can be extensively used for testing the usefulness of an outlet and the power consumption of electronic items plugged into it. By calculating the power flow through a single outlet plug-in wattmeter can detect damaged electronics or bad electrical wiring. In this category one of the simplest and easy-to-use wattmeters includes the Kill-A-Watt EZ from the Power Meter Store.