Designed for professional installers in real-world jobsite conditions.Exclusive "hot keys" automatically size, space and format labels for industrial applications.Pre-programmed symbol library.Prints Code 39 and Code 128 bar codes on 3/4" labels.Large two-line backlit display.Slip-resistant grip and rubber bumper protect against damage.Uses industrial strength labels that resist extreme heat, UV rays, moisture, chemicals and solvents.Automatic shut-off maximizes battery life.