XIAOMI DUKA LS-P LASER RANGE FINDER calibrating 标定 

hello my units turned into inches i cant fix it to meters how do i reset this?

how to turn on back light? mine back light only on while connect the charging cable

what the different of CAL 1, CAL 2, CAL 3?? Please give us a valid and complete information on your review, thanks

It is not charging since I am using after a year, how can I replace it's battery?

Ia number 6 the correct number to calibrate?.

what type of charging interface does it use?

please send me the english user manual. thank you very much.

Please send me Hindi link