The DP-100 Differential probe provides a safety means for measuring differential voltage to all oscilloscope models. The DP-100 converts the high differential voltage (<=7000 peaks) into a low voltage (<=7.0v, with reference to the earth) and displays it on the oscilloscopes. DP-100 ( 100MHz/7KVp-p ) This is the first detachable design (patent for 15 years) High frequency, big power using. Max. Measuring is 7000Vp-p. It is capable for any brand of digital and analog oscilloscopes. Additional AC Adaptor. 16MΩ high input impedance.