Honeywell RAE QRAE 3 Wireless 4-Gas Monitor
QRAE 3 is a wireless compact monitor for one to four gases. The QRAE 3 provides detection and monitoring of Oxygen (O2),Combustibles, and toxic gases that include Hydrogen Sulfide (H2S), Carbon Monoxide (CO), Sulfur Dioxide (SO2) and Hydrogen Cyanide (HCN).