This code usually appears if the cuff can't quite get enough air or if the connection is a little loose.

• Check the plug where the cuff meets the monitor to ensure it’s pushed in all the way.
• Make sure the cuff is wrapped snugly against your bare skin (about two fingers' width above your elbow). If it's too loose, the BPM Vision won't be able to inflate correctly.

This code appears when the BPM Vision detects excessive movement or noise that might interrupt the measurement. 

• Sit in a comfortable chair with your back supported and feet flat on the floor.
• Avoid talking or moving your arms while the cuff is inflating. Take a few deep breaths and try again after a minute of rest.

Please refer to the this article for more information on how to properly position the cuff.

This error appears when the BPM Vision detects a heart rate outsidethe supported range of 40-199 bpm the BPM Vison. As such, a very low or very high heart rate can result in this error message.

• If you’ve just been exercising or are feeling stressed, rest quietly for 5 to 10 minutes before taking another measurement. This allows your heart rate to return to its resting state.

This happens when a button is pressed during the middle of a reading, which can be done by accident.

• Once you press the start button, place your hand palm-up on the table and avoid touching the device until the screen shows your final results. 

An empty battery icon will appear on the screen in case the device's battery is too low. 

• In this case please charge the BPM Vision using the provided charging cable before taking a new measurement. You cannot use the device while it is charging.