Fault/Remedy
Fault
The DCF77 signal for the time cannot be
received.
Temperature indication appears too high.
Instead of showing the measured values for
temperature or humidity, the display shows
H.HH or LL.L.
The indicator is illegible, the function is
unclear, or the values are obviously false.
The time differs by exactly one, two, three,
etc. hours.
Technical Data
General
Model:
Input:
Battery:
Rated current:
Max. power consumption:
Standby:
Measuring range
− Temperature:
− Humidity:
Mains adaptor
Type:
Input:
Output:
Protection class:
DCF Radio Alarm Clock CK 1708 | CK 1709
Possible Cause
Check the chosen location.
Start the signal reception manually,
if necessary.
Adjust the time manually.
Check whether the device is
exposed to direct sunlight.
The values lie above or below the
measurement range.
Disconnect the radio alarm clock
for a few moments from the power
supply.
You have probably set an incorrect
time zone.
DCF Radio Alarm Clock CK 1708 (white), CK 1709 (black)
5 V
2x L06 (AA)/1.5 V
< 2 A at 5 V
approx. 10 W
max. 0.4 W
-10 °C - 50 °C (14.2 °F - 122 °F)
20% - 95%
HX12-0502000-AG
100-240 V~, 50/60 Hz
5 V
/2 A
II
Fault/Remedy
35