Instructions Short Press the Right Key to Switch On the scale. While the scare is switched On, the Right Key works as Tare, Short Press it to set the display to zero. Long Press the Right Key to Switch Off the scale, it will also automatically Power Off when idles for 1 minute. Short Press the Left Key to Switch between units. Care & Maintenance DO NOT strike, shake or drop the scale. Scale is not designed for commercial use. Use the scale on a hard, flat surface. Avoid contact with acids and citrus juices. Clean with a soft, damp cloth. DO NOT immerse in water or use caustic cleaners or abrasives. All parts should be wiped clean immediately after direct contact with foods. Store in a dry location at room temperature.