... is smooth and nice,when getting the signal from emitter, it will response immediately.If emitter does not send ... or 3 button,then the counter receiver will begin to work, and voice out B,B,B sound ... 3V/capacity 600mah,Battery using longest time is up to 3~5 months.3.Goods finder remote control ... 12V27A battery,after 6-10 months,please pay attention to power energy or change battery. remote control key ...