Flow type:water、sea water、industry water、oil、liquid available for ultrasonicSpeed scope:0.01~30m/sAccuracy:±1%Main set :2×20 LCD,temperature(-20~60℃) Printing RS-232 outputSensor:Standard S:DN15~DN100mm Standard M:DN50~DN1000mm Standard L:DN300~DN6000mmPower:Ni-H battery can work 20 hoursPower consumption:2WHeavy:538g (main set) (200×92×32mm) Remarks:protect box in bad conditionPls contact us into hellojudy1221 at yahoo.com.cn directly. Tks or add Msn address tianjia1221 at hotmail.com