Instructions for use: 1. Tear open the package along the V-shaped opening and take out the Anesthesia Depth Sensor. 2. Remove the Eeg Equipment from the release film (first check whether the electrode is dry, and if it is dry, replace the Disposable Electroencephalogram Monitoring Sensor) 3. Place the three sensor pieces in the corresponding positions as shown in the figure (note: prevent contact that may cause contact Defective) If there is a defect, you should first press the edge of the patch, and then gently wipe the middle of the patch) 4. Place electrode 1 in the middle of the forehead, 5cm away from the bridge of the nose, electrode 2 above the eyebrow arch, and electrode 3 behind the ear. The protrusion of the nipple. 5. Insert one end of the Eeg Disposable Sensor connection card into the corresponding interface of the lead.