Sleep To The Radio or Music Timer
You can program the sleep timer to play the Radio or AUX IN for up to 90 minutes and then shut ‘Off’ automatically.
1.Press the SLEEP button.
The display will briefly show “10” and the Radio or AUX IN will begin to play.
After 10 minutes the Radio or AUX IN will shut off automatically. Each time you press the SLEEP button, the sleep timer will start at 10 minutes. This is the sleep timer default setting.
2.To increase or decrease the amount of the time that the Radio or AUX will play before shutting off, hold the SLEEP button and press the SET 
or 
button to change the display to the desired sleep time, up to a maximum of “90” minutes or a minimum of “2” minutes.
NOTE: When you change the sleep time from the 10 minutes default setting to a different setting, the new setting becomes the default setting. Whenever you activate the sleep timer it will begin with your new default setting and count down to zero from that point.
3.The Sleep operation may be repeated several times if desired but after one hour it will not repeat.
4.To cancel the sleep timer before it counts down to “00” and shut the radio “Off” immediately, press the RADIO ON/OFF BUTTON
IMPORTANT: Remember that the station and volume settings you choose for the Sleep To Music operation are the same settings you will hear if you set the alarm for wake to radio the following morning.
DIMMER Control
The DIMMER control was set to the High position as the factory default setting. If you find the clock display is too bright in a darkened room, set the DIMMER control to the LO (Low) position.
Changing The Lithium Battery
Like all batteries, eventually the built in lithium battery will need to be replaced. A number of factors, such as, the length of time between the date the radio was manufactured and the date you plugged it in for the first time determine the amount of time before replacement. During this initial storage period, the lithium battery is supplying power to the SmartSet® computer memory. Once you plug the radio in, your household outlet supplied the power, and the battery is not being used. A fresh lithium battery can supply power to the SmartSet® computer for at least 2 years even if it is never connected to an AC power supply. If your clock radio was connected to your AC supply within a few months after it was manufactured, and you experience only the normal, nuisance type, short duration power interruptions, your battery may last for up to 5 years or even longer.
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