BW Gas Alert Micro Clip XL BW GasAlertMicroClip XL 4-Gas Detector – %LEL, O2, H2S, Carbon Monoxide The really simple to make use of, likewise structured as well as little GasAlertMicroClip provides inexpensive safety from weather gas threats. For increased battery life, especially in cool environment, choose the GasAlertMicroClip XL. The GasAlertMicroClip is absolutely ideal with BW’s MicroDock II automated assessment as well as additionally calibration system as well as likewise Fleet Manager II home computer software application.