A button/coin-shaped battery is used in the remote controller of the appliance. If you accidentally swallowed the battery, go to the doctor immediately for emergency treatment. If you fail to receive first aid within 2 hours after you swallowed it, you may experience damage to your internal organs or death in severe cases.
Do not swallow the battery.
If the battery tray is not secured firmly, stop using the appliance instantly and keep it away from children.
Replace the all batteries in the remote controller with new ones of the same type. Do not mix old and new batteries or different types of batteries.