Fixed Pumping Gas Detector NH3,O2 ,CH2O,H2

Variant Description: It can do the NH3,O2 ,CH2O,H2 in one device. And it is with internal pump.

Faster response for the NH3,O2 ,CH2O,H2

Measuring Range : NH3 0-100ppm，O2 0-30%VOL，CH2O 0-10ppm，H2 0-100%LEL

Multi gas detector， RS458-USB for data transfer

With alarm light With power Adapter Direct pug and use Product