The Wasp WPL305 monochrome direct thermal label printer comes equipped with serial, parallel, and USB ports, prints 5" per second in black at 203 dpi, and can be used to print labels or other media up to 4.25" wide. Direct thermal printers use heat instead of ink and are typically smaller, quieter, faster, and more energy-efficient than dot-matrix printers. The WPL305 can print up to 5" per second at 203 dpi (dots per inch) for print clarity and contains 8 MB of SDRAM memory for responsiveness. The 4 MB of flash memory provides storage for graphics and data. Serial, parallel, and USB ports allow connectivity to a computer or other devices (cables sold separately). The printer's double-walled casing is made of ABS (acrylonitrile butadiene styrene), which helps resist impact. A reflective media sensor allows the printer to identify the gaps, holes, notches, or black marks between labels to print the labels accurately. A paper roll cover can be opened to load media. EPL, WPL, and ZPL programming languages are standard. The auto-detectable power adapter can accept AC power between 110 and 240 volts. The printer weighs 7 lb. and measures 7.4 x 8.39 x 12.36 inches (H x W x D). (H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.) This printer accepts a roll of media measuring between 0.78 and 4.4 inches wide and up to 5" in diameter with a 1" to 3" core. For a complete set of product specifications, please see the manufacturer's brochure.Label printers, also known as label makers, can be used to print labels, tags, receipts, and other similarly sized media. Direct thermal and thermal transfer label printers use heat instead of ink to print on coated thermal media. A parallel, serial, or USB port allows a label printer to be connected to a computer. An Ethernet port or wireless capabilities may enable it to be connected to a computer network. Label printers can be used in a variety of commercial environments, including warehouses, laboratories, retail stores, health care facilities, and shipping and receiving facilities.Wasp Barcode Technologies manufactures barcode scanners, printers, labels and other data capture and tracking solutions for businesses. The company, founded in 1994, is headquartered in Plano, TX.