Best Gas Detector For Refinery

Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display

TOPTES

TopTes PT199 Natural Gas Leak Detector with Audible & Visual Alarm, Portable Gas Sniffer to Locate Combustible Sources Like Methane, Propane for Home(Includes Battery x2)-Orange

2 Packs Gas & Carbon Monoxide Detectors - Plug in Carbon Monoxide Detector & Propane, Natural Gas Detector, CO Monitor Alarm & Explosive Gas Detector Alarm for Home,RV

TOPTES

TopTes PT520A Natural Gas Detector, Gas Leak Detector with 17-Inch Gooseneck, Locating The Source of Propane, Natural Gas, and Combustible Gas Leak for Home and RV (Includes Battery x3) - Orange

Techamor Y401 Natural Propane Gas Detector, Home Gas Alarm and Monitor, Leak Alarm for LNG, LPG, Methane, Coal Gas Detection in Kitchen, Home, Camper (1, White)

Colorwell Natural Gas Detector Plug-in Propane Gas Detector for Home & RV Gas Leak Detector for LNG, LPG, Methane - 2 PCS

Carbon Monoxide Detectors, 4 in 1 Protectmeter Natural, Propane, Methane Portable Traval Gas Leak Detector, Carbon Monoxide Detectors Plug in, Temperature & Humidity Detectors, Digital LCD

Klein Tools ET120 Gas Leak Detector, Combustible Gas Leak Tester with 18-Inch Gooseneck Has Range 50 - 10,000 ppm, Includes Pouch, Batteries

HAKINAKU 4in1 Plug in Carbon Monoxide Detector & Natural Gas Combination Detectors CO Gas Temp Humidity with 2.1'' HD Screen & Indicator, Propane, Methane Combustible Gas Alarm,Black

Plug in Natural Gas Detectors & Propane Gas Detectors for Home,RV & Kitchen, Combustible Gas Leak Detector Monitor for LNG, LPG, Methane.