Roberts Radio RD-22 - Manual (Page 20)

Sleep function
Your clock radio can be set to turn off after a preset time has elapsed.
1. Press and hold in the StandBy button for more than 3 seconds.
2. Press the Tuning Up or Down buttons to increase the time by 1
minute increments, up to a maximum of 99 minutes.
3. Pressing the Tuning Up or Down buttons will decrease the time by
1 minute increments.
4. Press and hold the Tuning Up or Down buttons to advance the sleep
time quickly.
5. Your radio will switch off after the preset sleep time has elapsed.
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