The KB Electronics KBDF Series of Digital AC Drives with CSP consists of 16 inverter models. These Chassis / IP 20 style Drives are ideal for OEM applications where digital programming and displays are required. Digitally programmable, all similar functions are presented in common groups making these Adjustable Frequency Drives easy to install and operate. A large 4-digit display provides easy-to-read operating parameters and programming functions, even in bright sunlight. KBDF models with the 'F' suffix contain a built-in Class A, AC line RFI/EMI filter.