Gas-detection monitors and instruments scan an area for gas leaks and can assist prevent harmful gas exposure. Portable single-gas and multi-gas detectors are frequently used to inspect tanks and pipes. Single-gas detection tubes are perfect for spot testing because they include granules that change color when exposed to a specific substance. Gas detectors that are permanently installed allow continuous monitoring of a specified area. Automated gas detector test systems keep track of data and maintain the calibration of a suitable gas detector. The sensitivity of gas detectors is tested with calibration gas. Multiple gas sensors are managed by gas detection control panels, which also transmit the state of the detection system and establish alert and warning thresholds.