MC2-XWHM-Y-NA GasAlertMicroClip XT Four-Gas Detector, O2/CO/H2S/LEL

Calibration was good for 320 days. Came with hose and clip for gas calibration and charger. Everything works good so far.

Description says XT, but product shipped is actually XL.

I would give zero stars if possible. We purchased 2 of the Gas Monitors & one worked for 2 weeks & started showing a Calibration Failure that we are not able to get rid of. From the manufacturer & other info, this is a sensor failure. We are a training company and use it only for training. It is stored in a non-contaminated area in a Pelican case. We know it is nothing that we have done & the company doesn't answer their customer service line & there is no return for damaged items. wtf? This is insane for something that is $500 and a piece of safety equipment.

Like some other reviews, I ordered two monitors two days ago. They arrived the very next day and fell out of calibration the day before they arrived. How mysterious. Seems to be a pattern emerging.

Hopefully the O2 sensor will last the normal 2-3 years from purchase date since It is already over a year old and out of calibration the day it arrived on my doorstep. For a nearly $500 monitor you would expect it to be top notch, new and ready to use, rather than immediately cost additional time and resources to get it ready to perform. Two stars are for the good shipping time, good physical condition and it does turn on out of the box despite needing calibration.