A control device comprising: a first button and a second button; a backlighting circuit comprising a first light source configured to illuminate the first button, and a second light source configured to illuminate the second button; the control device further comprising: a light detector circuit configured to measure an ambient light level in a vicinity around the control device; the control device being characterised in that it further comprises: a memory for storing a first adjustment curve and a second adjustment curve, wherein the first adjustment curve is different from the second adjustment curve; and a control circuit configured to: control the first light source to illuminate the first button to a first surface illumination intensity and control the second light source to illuminate the second button to a second surface illumination intensity, the second surface illumination intensity being less than the first surface illumination intensity; and adjust the first surface illumination intensity in response to the ambient light level measured by the light detector circuit using the first adjustment curve, and adjust the second surface illumination intensity in response to the ambient light level measured by the light detector circuit using the second adjustment curve. a first button and a second button; a backlighting circuit comprising a first light source configured to illuminate the first button, and a second light source configured to illuminate the second button; the control device further comprising: a light detector circuit configured to measure an ambient light level in a vicinity around the control device; the control device being characterised in that it further comprises: a memory for storing a first adjustment curve and a second adjustment curve, wherein the first adjustment curve is different from the second adjustment curve; and a control circuit configured to: control the first light source to illuminate the first button to a first surface illumination intensity and control the second light source to illuminate the second button to a second surface illumination intensity, the second surface illumination intensity being less than the first surface illumination intensity; and adjust the first surface illumination intensity in response to the ambient light level measured by the light detector circuit using the first adjustment curve, and adjust the second surface illumination intensity in response to the ambient light level measured by the light detector circuit using the second adjustment curve. a light detector circuit configured to measure an ambient light level in a vicinity around the control device; the control device being characterised in that it further comprises: a memory for storing a first adjustment curve and a second adjustment curve, wherein the first adjustment curve is different from the second adjustment curve; and a control circuit configured to: control the first light source to illuminate the first button to a first surface illumination intensity and control the second light source to illuminate the second button to a second surface illumination intensity, the second surface illumination intensity being less than the first surface illumination intensity; and adjust the first surface illumination intensity in response to the ambient light level measured by the light detector circuit using the first adjustment curve, and adjust the second surface illumination intensity in response to the ambient light level measured by the light detector circuit using the second adjustment curve. a memory for storing a first adjustment curve and a second adjustment curve, wherein the first adjustment curve is different from the second adjustment curve; and a control circuit configured to: control the first light source to illuminate the first button to a first surface illumination intensity and control the second light source to illuminate the second button to a second surface illumination intensity, the second surface illumination intensity being less than the first surface illumination intensity; and adjust the first surface illumination intensity in response to the ambient light level measured by the light detector circuit using the first adjustment curve, and adjust the second surface illumination intensity in response to the ambient light level measured by the light detector circuit using the second adjustment curve. control the first light source to illuminate the first button to a first surface illumination intensity and control the second light source to illuminate the second button to a second surface illumination intensity, the second surface illumination intensity being less than the first surface illumination intensity; and adjust the first surface illumination intensity in response to the ambient light level measured by the light detector circuit using the first adjustment curve, and adjust the second surface illumination intensity in response to the ambient light level measured by the light detector circuit using the second adjustment curve.