Shows if low voltage condition exists. Plugs into any 120 volt outlet. Helps you protect voltage sensitive equipment such as air conditioners and computers. Green zone indicates safe voltage range. Red zone indicates voltage sensitive appliances should be turned off to prevent damage.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov