Four separate Digital to Analog Converter Boxes (DTV Tuners). All are in working condition and have been tested using a universal remote control (not include). PLEASE NOTE: Remote controls are NOT included! Here are the brand and model numbers of each unit:

INSIGNIA MODEL: NS-DXA1-APT  

INSIGNIA MODEL: NS-DXA1  

MAGNAVOX MODEL: TB100MG9 

RCA MODEL: DTA800B1

Inspect all the photos for details. I'll be glad to answer any questions you have.