The Honeywell BW MicroClip XL utilizes 4 sensor technologies for gas monitoring in confined spaces. The LCD displays real-time readings of O2, CO, H2S, and Combustibles (LEL).Simple one-button operation reduces training time and prevents operator error. Audible, visual, and vibrating alarms warn of potentially hazardous conditions.Key FeaturesConfined Space detection for O2, CO, H2S, and LELCompact, lightweight, and easy to wearIntelliFlashTM verifies operation and complianceContinuous LCD shows real-time concentrationsOne-button operation reduces training timeAudible, visual, and vibrating alarmsSimple automatic calibration procedure10 hr battery life - recharges in less than 4 hoursBuilt-in concussion boot and alligator clip