In general, it is possible to operate the indoor sensor with
rechargeable batteries.
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 radio range can
also be reduced.
This is why we especially recommend the use of high-quality
alkaline batteries, to allow a long and safe service life.
The indoor sensor needs two batteries type AA/Mignon (e.g.
Conrad item number 650117, order 2x).
23