Twenty-five (25) mPower POLI multi-gas detectors; Specifications include, but are not limited to: FUNCTIONAL ATTRIBUTION: Detector Specifications; Size 5.74 x 3.31 x 1.65 in (140 x 84 x 42 mm); Weight 15.5 oz (435 g); Sensors Over 30 interchangeable and fieldreplaceable sensors including PID for VOCs, EC for Toxic and O2, Pellistor for LEL, and NDIR for LEL, Vol% & CO2; Response Time (t90) •15 seconds (LEL/CO/H2S/O2) •Others vary – see TA Note 4 at www.mpowerinc.com; Battery Rechargeable Li-ion pack: 16 hours in diffusion mode, 12 hours with pump; Direct Readout •Real-time reading of gas concentration •PID measurement gas and correction factor •Visual compliance indicator •Battery status •Datalogging on/off •STEL, TWA, peak and minimum values •Man-Down alarm on/off