Hughes DVM1221 Accurate Digital Volt Meter/Nightlight

Glow In The Dark Digital Display
Simply Plug In To Any Outlet In Your Rv To Measure Ac Voltage
Use This Device To Monitor Your Voltage With Digital Accuracy
Voltage Below 108 Or Above 132, Can Damage Your Electrical Devices
Also Suitable For Boat/Marine, Household Or Office Usage!
Measuring Range: Ac Current From 90 132 Volts

Caution!
Avoid Using In A Wet/Damp Environment
Do Not Allow Children To Use As A Toy