How to place the Coala for a chest recording
Hold the Coala between your thumb and middle finger. Place the Coala firmly to the left of your sternum (chest bone) as shown. It is important that the Coala is held upright (COALA text facing down). Press the heart button with your index finger to start recording and hold Coala steady during the entire recording. Try to relax and breathe normally. Avoid speaking during measurement recordings to ensure best quality recording.
How to place the Coala for a thumb recording
Place your thumbs on top of electrodes as shown in diagram below. For best possible recording, hold Coala in a relaxed position resting your forearms on a table or on your legs when sitting down. Avoid pressing the electrodes too hard, just maintain a firm grip.