The ZQ500 Series just got tougher. Extreme environments and bangs and bumps are no match for these lightweight, compact receipt and label printers. Zebra's ZQ511 and ZQ521 printers are the most rugged printers available. They perform in the widest operating temperature range in the industry and can withstand repeated drops to concrete from up to 6.6 feet. Water spray is no match with their IP54 rating.