SD card real time recorder 

MANOMETER 200 mbar 記憶式壓力計/差壓計

Model : PM-9112SD

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Manometer, Dual & differential input, 200 mbar

Data hold, Memory, RS232

Size: 180x72x32mm

mbar, PSI, Kg/cmz, inch/Hg, mm/Hg,

inch/H20, meter/l-kO, Atmosphere