The entire PFR-100 series provides output terminals on the front and rear panels. The front output terminals shorten the time for users to replace the test leads when adjusting the panel functions; the rear output terminals can facilitate the wiring of the rack assembler. The height of 3U, the width of 70mm, and the weight are about 2.5KG, which greatly improves the portability of PFR-100. In addition, using Multi-drop mode can control up to 31 PFR-100 at the same time, without using another switch/Hub. It can help customers save the cost of equipment acquisition.