The Pico D9 connected range of accessories connect exclusively with the PicoScope 4444 differential oscilloscope. The scope interface also provides power to the accessory.
Both TA300 and TA301 current probes use Hall effect technology to sense AC and DC currents. The TA300 is a 40 A probe suitable for measuring signals from DC to 100 kHz. It is a precision probe for smaller currents and can resolve to a few milliamps. The TA301 is a switched-range 200/2000 A probe suitable for measuring signals from DC to 20 kHz bandwidth.