... cheap 3.100pcs in stock 1.Summary:LK-3000 personal alarm dosimeter is a kind of lapel monitoring instruments,mainly used ... the instrument blocked, the instruments still emits continuous sound-light alarm. This instrument is of low consumption, many functions, small ... is more than 10mR/h, instrument will continuous sound-light alarm.Power supply: two 7# battery,power dissipation < 1mwDimension: 88× ...