Fireboy-Xintex Gasoline Fume Detector w/Dual Channel - 12/24V [G-2B-R]Gasoline Fume Detector with Dual Channel 12 24V The Dual Channel Gasoline Fume Detector is an effective means to monitor gasoline fumes in an engine compartment, fuel tank storage area or in other areas where gasoline fumes might accumulate. Complete system with easy installation and precise monitoring. Features: Simple Installation Audible and visual alarm to indicate LEL (Lower Explosive Level) presence Monitors two (2) separate areas simultaneously