Prime Products 12-4055 AC Voltage Line Meter<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Shows if low voltage condition exists</li><li>Plug into any 120 volt outlet</li><li>Helps you protect voltage sensitive equipment such as air conditioners and computers</li><li>Green zone indicates safe voltage range</li><li>Red zone indicates voltage sensitive appliances should be turned off to prevent damage</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51hCjgqGg1L.jpg" noproxy>