This sign is very noticeable, and set to max will still stand out even on a sunny day. It's dimmable, with ten settings to suit any occasion, and the lowest level (10% brightness) is good for night time.
This is an LED light instead of traditional neon, with the benefit of a far lower cost price, lower running cost, and no glass tubes to worry about being smashed. You can knock this light without much worry.
Mine is the 5 volt version, powered from a USB plug. The lead is plenty long enough, making it possible to hide the wire behind and amongst other display items, on its way to a charger socket. One word of warning is to avoid pulling on the wires, in case it damages the connection at the rear. If it ever stops working that's the most likely cause, and chances are it's mendable.
I think this sign is good looking and effective, and the increased presence it gives you will help pay for itself pretty quickly in additional footfall. It gets a full five stars from me.