Backlight Indicator and Classification of Blood Pressure
6
Diastolic BP
(mmHg) Backlight Colour
Systolic BP
(mmHg)
Low * 90 or 60 Flashing green/amber
Optimal 91–119 and 61 - 79 Green
Normal 120–129 and 80 -84 Green
High-normal 130–139 or 85 - 89 Amber
Grade 1 Hypertension 140–159 or 90 - 99 Flashing Amber
Grade 2 Hypertension 160–179 or 100–109 Red
Grade 3 Hypertension 180 or 110 Flashing red
The backlight will change according to your measured result. The table below shows the different blood
pressure classifications as defined by the British Hypertension Society and the corresponding backlight
colour. Please note that factors such as smoking, obesity & diabetes will affect your blood pressure. Always
consult your physician or healthcare professional before starting a diet or exercise regime.
* Low blood pressure, or hypotension, occurs when blood pressure during and after each heartbeat is much lower than
usual. This means the heart, brain, and other parts of the body do not get enough blood. Symptoms may include blurry
vision, confusion, dizziness, fainting, light-headedness, sleepiness & weakness. However, blood pressure that is borderline
low for one person may be normal for another. Consequently, hypotension in a healthy person that does not cause any
problems usually doesn't require treatment. If in doubt, seek advice from your physician or healthcare professional.
Note: The backlight indicator and the colours used are designed to indicate the various classifications of
blood pressure only. The use of the colours Amber or Red should not be interpreted as a medical emergency.
Classification of Blood
Pressure Levels
