Ion Science ARA-X4 Multi-Gas Detector — 4-Gas Monitor (LEL, O2, CO, H2S) Sensor Configuration:ARA-X4 Diffusion (CAT) CO/H2S DualTox - Dummy - O2 (L) (AX4D-3011-00) It stores up to 100

It stores up to 100 readings

Resists collapsing under vacuum

Dust filter

Seawater specific gravity

Ion Science ARA-X4 Multi-Gas Detector — 4-Gas Monitor (LEL, O2, CO, H2S) Sensor Configuration:ARA-X4 Diffusion (CAT) CO/H2S DualTox - Dummy - O2 (L) (AX4D-3011-00) It stores up to 100Ion Science ARA X4 Multi Gas Detector The Ion Science ARA X4 is a compact, intrinsically safe portable multi gas detector that simultaneously monitors four atmospheric hazards: combustible gas (LEL), oxygen (O2), carbon monoxide (CO), and hydrogen sulfide (H2S). Available with catalytic bead (CAT) or infrared (IR) LEL sensing and standard or long life oxygen sensors, the ARA X4 warms up in about one minute, self tests on startup, and runs on a