Frequency Range: 400-8400MHz, Attenuation Range: 0-95dB x 1dB steps, Impedance: 50 Ohm, RF, Connectors: SMA female, Input Power: +24dBm. The attenuators are available as 2-Channel, 4-Channel or 8-Channel. Test software is provided with the USB attenuator. If you would like to integrate the USB attenuator into your script testing, we do offer a JFW Python library upon request.