This listing is for a new heinzinger PNChp 30000-5 neg ultra high stability power supply. This 30kv, 5ma supply is rock solid and good to 10 ppm stability. Comes with both analog remote control and the ethernet option. It was intended for use in a particle accelerator project that was canceled before being finished. At the time of writing I have roughly 2 dozen of these supplies, so I will be using a stock photo for the different models as they are all identical. Comes with a HV cable and power cable.