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M-40 Multi-Gas Monitor

1 to 4-gas monitoring for O2, LEL, CO, H2S, Standard vibrating, 90 dB audible and ultrabright visual alarms, 18-hour runtime with integral Li-ion battery pack, Two-year all-inclusive warranty.


Built with the durability and simplicity found in every Industrial Scientific instrument, the M40 is a reliable, low cost gas monitoring solution for confined space or personal monitoring applications. The M40’s rugged composite case is immune to RFI, and houses four discrete sensors, a large LCD readout, and integral lithium-ion battery for up to 18 hours continuous runtime.


The M40 continuously monitors oxygen, combustible gases, carbon monoxide, and hydrogen sulfide in any combination, activating bright alarm light, 90-dB audible and internal vibrating alarms when gas concentrations exceed the preset limits. Additional standard features include Peak/Hold functions, STEL and TWA readings, a continuous loop datalogger and ‘Quick-Cal’ calibration.


The M40 comes standard with a charger, leather carrying case, cell-phone-style and suspender clips, belt clip and calibration cup with tubing. Available accessories include SP40 motorized remote sampling pump, 12 VDC automobile charger, and M40 datalink. Weighing 8.6 ounces, the M40 is small in size and big in value.












Industrial Scientific M-Cal Calibration Station compatable.











Item IDDescriptionUOMPkg QtyUnit SizeQuantity
18105437-01111
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M40, O2, LEL, CO, H2S Li-Ion11
INDSC-1810543701101
/contentonly.aspx?file=images/items/INDSC-1810543701101_t.* does not exist
M40, 02 LEL CO11
18105437-11111
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M40 w/SP40 PUMP COMBO(O2,LEL,CO,H2S)11
INDSC-1810543711101
/contentonly.aspx?file=images/items/INDSC-1810543711101_t.* does not exist
M40 s/SP40 PUMP COMBO (O2,LEL,CO)11
INDSC-M40KIT11101
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M40 Confined Space Kit LEL,O2,CO11
INDSC-1810543711100
/contentonly.aspx?file=images/items/INDSC-1810543711100_t.* does not exist
M40 w/SP40 PUMP COMBO (O2,LEL)11