Step 1 Put on a new, clean, disposable lens filter by snapping into position. To turn the thermometer on, push the "start" button. The thermometer is ready to use after two beeps are sounded and the non-flashing ear icon appears. | Step 2 Fit the probe snugly into the ear canal, then push the "start" button. | Step 3 One beep signals normal temperature. Audio fever indicator will trigger 2 consecutive beeps when the reading is equal or higher to 37.5°C and 4 beeps if the reading is equal or higher to 38.6 °C. The result is shown on the display. | Step 4 Gently pull off the disposable lens filter. Do not use force in removing the disposable lens filter. The thermometer turns off automatically after 60 seconds of inactivity. |