Prime Products AC Voltage line Meter 12-4055. Volt-A-Check. This device shows if low voltage condition exists in Your . Plug into any 120 Volt outlet.
Shows if low voltage condition exists in Your RV. Plug into any RV 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.