Low-Cost Flat Keyboard ECR with High Speed Thermal Printing! A Commercial Grade ECR Featuring a Full Size Heavy-Duty Steel Cash Drawer, POS-Grade Thermal Printer, and Key Lock Security for Voids, Returns and Reports The ER-390M is a perfect choice for any small retail or food service business. The quiet, high-speed thermal printer provides receipts that match the quality of high-cost POS equipment. Built-in memory can be assigned to capture transaction information for later sorting and review (electronic journal.) The flexible ER-390M keyboard can be configured with the exact functions you require, providing security, cash control and critical sales information.