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RHK900 (SBT625ss) for USA                                     Updated: 16-12-2014 

 

Snooze Operation– 
SNOOZE button (3)

 – press after alarm has sounded, the alarm will be turned off for 9 minutes for 

extra sleep. The alarm will come back again after 9 minutes. You may repeat many time up to 119 
minutes . 
 

Adjusting The Snooze Time 

The default snooze time setting is 9 minutes but you may adjust the snooze time between 1 minute 
and 30 minutes as desired. To adjust the snooze time: 

• 

Press and hold the 

SNOOZE button (3)

 for four seconds. The clock display will show the 

default snooze time ‘9’. Release the Snooze button. 

• Press 

the 

SLOW button (9)

 to adjust the snooze time to the desired setting, from 1 minute to 

30 minutes. 

• 

When the display is showing the desired snooze time, it will return to the normal clock mode 
after 3 seconds. The new snooze time setting becomes the new default and remains in the 
memory until you change it again.

 

 

Volume –  

To adjust the volume rotate the 

Volume wheel (12)

 until you have reach the desired level. 

 

Tone – 

Adjust the tone by slide the 

Tone slider (6)

 until you have reach the desired level. 

 

Dimmer Operation 

There is a 5-level brightness control for the LED display. Press the 

SNOOZE button (3)

 once to 

change the display brightness. The brightness will cycle from 5-4-3-2-1-2-3-4-5 (from bright to dim 
then from dim to bright). 

*NOTE*

The dimmer function will not work, when the clock is in snooze mode.

 

Bed Shaker / Vibrator  

1)

 

Attach the bed shaker jack to the back of the clock at 

VIBRATOR input (17).

 

2)

 

Place vibrator under mattress or pillow. 

 

USB Charging

      

This alarm clock is equipped with a convenient USB charging port on the back panel that allows you 
to recharge many brands of mobile phones, portable music players, and other handheld devices that 
are supplied with USB charging cables. The output rating of the USB charging port is 500mA. 

To charge your device, connect the USB charging cable that was supplied with your handled device 
to the 

USB charging port (16)

 on the back panel of this alarm clock. Observe the charging indicator 

on your device to confirm that it is charging.  

Note:

 Charging time will vary depending on the charging current that your device requires. 

Therefore some devices will take longer to charge than others. 

 
Battery Backup – 

To use the battery backup, you can install 1 pieces of CR2032 battery at the back of the clock under 
the 

battery cover (15)

. Please note the LED display will not show during power failure but the clock 

will still be running and keeping proper time until the power is restored.   

NOTE: 

For the best results it is recommended that the battery be changed every 6-8 months. If the 

clock is not used for a while, it is recommended to remove the battery to aviod leakage. 

 
DC 5V Power Input – 

Attach the DC power supply input to the back of clock labeled  

DC5V 

 IN (14 )

.

 

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