Whether you ' re troubleshooting electrical issues at home or on the job site, the encorech-72va is the ideal tool for the job Remember to only use this meter with pure-AC power sources between 50-63hz, and avoid using it with inverter outputs or corrected sine circuits , this meter is designed for embedded installation and features a bright red digital display Accurately measure AC-voltage and current with the encorech-72va combination meter Perfect for electricians, homeowners, and anyone in need of accurate AC-voltage and current readings, Manufacturer: HZBB