description ms safety works altair gas detector 4xr multigas detector, (lel, o2, h2s & co h2), charcoal outfitted with rapid-response msa xcell sensors, the altair 4xr gas detector is the toughest 4-gas monitor on the market and is backed by a 4-year warranty. the altair 4xr can also provide real-time incident awareness to team members, supervisors, safety managers and others when paired with the msa altair connect app via a bluetooth wireless connection. california proposition 65 warning. features real-time sense gas 2 times faster than the industry average with our xcell sensors quickly update msa altair 4xr settings via the altair connect app (available on the google play store) send event notifications via text message with the altair connect app specifications acme tools brand name msa safety works acme tools part number 10179330 assembled weight (lbs) 0.56 country of origin united states globaltradeitemnumber (gtin) 00641817134016 package contents gas detector, global charger, calibration tubing and cap package depth 7.08 package height 1.96 package weight 0.56 upc 641817134016