This answer applies to R2i Mk2
On R2i the brightness of the display screen in standby is set to low so it can be read in a darkened room but will not disturb sleep. If the OK button is pressed whilst in standby, the display will light up to full intensity for a few seconds. This allows the time to be easily read in a bright room without switching R2i on.
If not, please do not hesitate to contact us directly on +44 (0)1702 601410 or by using the enquiry form on our contact page.