For versions of Pilotâ„¢ that have analogue capabilities (currently the Pilotâ„¢-Mux with a PilotPlus-DAC expansion card or the Pilotâ„¢-OVR) then direct connection to data logger analogue inputs is possible. All versions with analogue output a voltage that varies between 0 volts and 3.3 volts according to the stream.