1. Adjusting the "switch / intensity" button to 4, and then adjusting the "sensitivity" button to about 2,the detection sounds 2 times per second , the frequency can be adjusted between 2-23Hz, you can adjust the intensity according to your own feelings. Because everyone’s skin is different and the humidity of weather is different, "sensitivity" adjusting vary. 2. Before using, the treatment probe is needed to be mounted on a host, and then insert the conductive wire rod to the host, the other hand holding the stick to form a loop. 3. Hold the acupuncture pen with a correct posture, like holding a pen, touching the metal conductive sheet 1 with your thumb, and touching the metal conductive sheet 2 with your Hukou acupoint (please see the picture below), and then put the probe to touch your skin uprightly. 4. When probing the meridian points and when you hear a beep and display value fast connections increases, the meridian points are detected, then press the button to start the therapy treatment. 5. When doing the treatment, you can adjust the "switch / intensity" button to the appropriate treatment intensity, to feel comfortable and appropriate (a total of 10 former level is adjustable from the digital 0-10). 6. After using, turn the "switch / intensity" button to"off ". 7. When replacing the probe to beauty probe,you need to put off the former probe anticlockwise and put on the beauty probe clockwise.