The following are common methods for turning off infrared absorption type LEL combustible gas detectors:

Press the power button to turn off: Many detectors can be turned off by long pressing the power button. For example, for Honeywell's MeshGuard LEL IR, press and hold the 'mode' button until a countdown of '5... 4... 3... 2.1... power off' appears on the screen. After the screen is empty, release the button to complete the shutdown Cut off power: For fixed detectors powered by external power adapters, the power plug can be directly unplugged to cut off the power. For portable detectors powered by batteries, it is generally necessary to open the battery compartment and remove the battery to cut off the power. 1. Shutdown through menu options: Some complex detectors have operation menus, and you need to enter the menu to find related options such as "Shutdown" and "Power Management", and then follow the on-screen prompts to shut down.