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

 

 

INSTRUCTIONS 

 

   

 

 
Features show on diagram above:

 

1.

 

PM indicator Time Set 

2.

 

Alarm 1 indicator 

3.

 

Snooze / Dimmer 

4.

 

Alarm Mode Switch (Off, Buzz, VIB) 

5.

 

Alarm Selector (AL1, AL2) 

6.

 

Tone Slider 

7.

 

Time 

8.

 

Fast 

9.

 

Slow 

10.

 

AL. Set  

11.

 

AL. OFF 

12.

 

Volume 

13.

 

Alarm 2 Indicator 

14.

 

DC5V input  

15.

 

Back Up Battery Cover 

16.

 

USB Charging 

17.

 

Vibrator Input 

 
Test Mode: 

1)

 

Press and hold the 

Snooze (3)

 and 

Time buttons (7)

 for 3 seconds to enter the Test Mode. The 

display will show "7ES7" to indicate it is in TEST Mode. To demostrate the unit function as 
follows: 
a)

 

Slide the 

Alarm Mode Switch (4)

 at OFF position, there will be a „VEE“ sound. 

b)

 

Slide the 

Alarm Mode Switch (4)

 at BUZZ position, there will be a „BEEP“ sound. 

c)

 

Slide the 

Alarm Mode Switch (4)

 at VIB position, the vibrator will vibrate. 

d)

 

Slide the 

Alarm Mode Switch (4)

 at BUZZ & VIB position, there will be a „BEEP“ sound 

and the vibrator will vibrate. 

2)

 

If within 1 minute no button is pressed, then it will exit the Test Mode and return back to the 
Time Mode. 

3)

 

To exit the Test Mode immediately, press any button (except the Snooze & Time buttons, 
which has no effect). 

 
Setting the correct time – 

1)

 

Press and hold the

 Time Button (7)

 at the same time press the 

Fast Button (8) 

to advance the 

clock display rapidly until the hour is correct.  

2)

 

Press and hold the 

Time Button (7)

 at the same time press the 

Slow Button (9) 

to advance the 

clock display rapidly until the minute is correct. 
A

 lighted dot (1)

 in the upper left of the clock display indicated the time is PM. For AM time 

indication, the dot does not light up. 

 

Setting the Alarm Time – 

Setting Alarm 1 

1)

 

Slide

 

the 

ALARM SELECTOR SWITCH (5) 

to AL1 position, the alarm indicator 

AL1 (2)

 will light 

up. 

2)

 

Press and hold the 

ALARM SET (10)

 and the 

FAST Button (8) 

or the 

SLOW button (9) 

to advance 

the clock display until you reach desired alarm setting. 

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