LED panel tester - hand-held test tool - simple label required

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This customer received 39 label designs from 9 designers. They chose this label design from josedomingo as the winning design.
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Label Design Brief
I have designed a product to test the LED panels of a road-side variable message sign (VMS). I don't expect to sell too many of these but thought it would look professional if it had a proper label.
I need a label designed for this hand-held test equipment. Attached is the positional layout of all the switches and text. I have also included a photo of the product.
A simple Google image search of "hand-held test tool" shows that it doesn't have to be fancy but rather functional.
I would like to put branding on the bottom 1/5th and have the option to interchange the brand if I ever get approached by one of the manufacturers of these signs. Initially it will just have a link to my website (ElectronicRescue.com.au) right down at the bottom.