?? ????? ??? ?????? ???? ???? ??? ?? ????? ????? ????? ?????? ?? ?????? ?????? ????? ???? ?? ????? ???????? ????? ???? ??? ????? ??? ????.????? ????? ??????? ?????????? ????? ??? ?? ??? ????? ????? ????? ?? ??????? ??????? ??? ?????? ?...???? ???????? ????? ?????? ?? ???? ??????? ??????? ????????? ????? ??????? ????? ???????.Battery-operated detect