MP102RT / Hydrogen Sulfide (H2S) 0.1-100 ppm, 2-yrs battery, UL Class I/II/III

Size: 3.46 x 2.44 x 1.3 in (88 x 62 x 33 mm) Weight: 4.4 oz (125 g) UL/cUL: Class I, Div 1, Group A, B, C, D; Class II, Div 1, Group E, F, G; Class III, Div 1 Temperature rating T4, -20° C ≤ Tamb ≤ +50° C 50 Event logger  IP rating: IP-67 Large LCD for real-time concentration readings  Password protection Low and High Alarms, adjustable in field Six bright red flashing LEDs 2 years operational life (up to 3 years using hibernation mode)