The document describes several fetal monitor transducer models that are compatible with different ultrasound fetal monitors and manufacturers. Models include the FMT-1 that is compatible with HP M1350 series monitors, FMT-2 that works with GE Corometrics 116 and 170 series, and FMT-3 that is a fetal transducer belt. Other models like the FMT-4, FMT-5U, FMT-5T, FMT-6, and FMT-7 are compatible with different manufacturers' monitors and some allow for twins monitoring. Contact information is provided for the transducer supplier.