inputs.text: not sure - used two set four car house key chains tested thehem times throwing thehem lawn walking around beep thehem hear loud would moderate success not many noises immediate neighborhood chirp audiblein house doors closed even chirp hard hear thehem unless one already room could difficult somebody not sure saw thehem last not know start cannot hope hear chirp distancefinally weeks started \\snare\\ constantly managed shake slap key bundle would stop little rattly noise first time happened driving thought something wrong cars dashboard realized key finder dangling ignitionafter finish spontaneous rattling phase last 5 weeks simply go silent words lithium battery coins last 3 months total not good efficiency replaced coins fresh ones darn little things never turned thehemselves back onso much not going make reclamation not worth time not buy another set