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Please note:
The product can be operated with rechargeable batteries instead of batteries
is possible.
However, due to the lower voltage of rechargeable batteries (rechargeable
battery = 1.2V, battery = 1.5V) and the lower capacity there is a shorter
operating time, the display contrast is equally reduced.
Rechargeable batteries are more sensitive to low outdoor temperatures than
normal batteries.
We therefore recommend using high-quality alkaline batteries. The product
requires four type AAA/micro batteries (e.g. Conrad item no. 652278).