The following OEM and aftermarket equipment are compatible with the Corometrics Fetal Monitor 172 from GE. The Corometrics 172 monitor features large LED displays allowing easy, at-a-glance confirmation of fetal heart rate and uterine activity. The 170 Series offers 9-Crystal Pulsed Doppler Ultrasound technology providing a wide-beam profile for high-quality fetal heart rate detection. The GE fetal monitor includes standard Z-fold paper and an interface for the optional Model 146 Fetal Acoustic Stimulator. The 170 Series is available in single (Corometrics 171) or twin (Corometrics 172) models. MME will continue to support the lifespan of your unit with quality accessories as well as premium preventive maintenance services through ReNew Biomedical. For more about servicing your devices, contact ReNew Biomedical here . Please note that different configurations of units may make them incompatible with certain accessories. If you should have any questions, please contact your MME customer representative or get in contact with one here: 866-468-9558