No box Or instructions. What you see is what you get. Will ship without batteries.

This is the Protek DI-2001 Digital Insulation Resistance Tester CAT.III. It is a handheld device that comes in beige color and was manufactured in China in the year 2001. The device has a digital display and is suitable for use in the HVAC & Refrigeration industry. It is designed to test insulation resistance and has several features that make it an ideal tool for professionals in this field. The brand of the device is Protek and it comes in an open box.