Transcutaneous electrical nerve stimulation (TENS) is an effective, natural method of pain control, involving the use of electrodes that adhere to your lower back (when used for management of labour pains).
The TENS machine passes small electrical impulses to the affected area of your body. When you’re using TENS during labor, you might feel a buzzing, tingling, or prickling sensation wherever the pads are placed. It’s easy to administer, and the person who is receiving the TENS can control the intensity of the sensation using the buttons on the device. There's also a boost button you can press with your thumb when you want maximum output from the machine. This may help you to get through each contraction.
The controller part of the TENS machine is easy to hold in your hand while you're in labour. But if you don't want to hold it, you can clip it to your clothing or attach a strap and hang it around your neck.