Siemens 7CF2 3D/4D Curved Array transducer has a frequency range of 2.0 MHz. – 7.0 MHz. and supports the following applications: Obstetrics, Gynaecology, Urology, Pediatrics, Abdominal. The Siemens 7CF2 transducer is compatible with: Simens/Acuson S2000, Simens/Acuson SC2000 ultrasound systems.