Blood Flow Measurement Ultrasonic Ultrasonic Blood Flow Measurement TrainerReal Time Measurement, Transducer Piezoelectric Doppler Type, Audio & visible indication. Control Audio & Output Control, Output audio Head Phone & speaker. DSO output 4mm Socket. Test point on Top of Instruments through 2mm socket. Standard Accessories Power Supply 230V / 50Hz, Dimension 250 x 75 x 250 mm