Safety Instructions: This instrument uses low energy energy doppler. Through design laboratory testing, clinical trials and clinical applications, it is safe to ensure that the doppler energy of this instrument is safe for fetuses, pregnant women and others.

However, it is not appropriate to use this instrument for a long time or for a long time. Don’t throw the battery into the fire to prevent the explosion from being dangerous. Using adapters that meet the relevant national standards, the instrument cannot work when charged. If the instrument is not used for a long time, please remove the battery in time This instrument is a fetal heart rate examination tool, and the results are not the only standard for fetal health. This instrument is designed to be a continuous working type, and be careful not to be wet by water. Do not pasteurize or