The ALTAIR io 4 is a connected multigas detector featuring cellular LTE-M / 2G, integrated GPS, and the XCell® sensor platform. With 1- to 4-gas configurations (e.g., LEL, O₂, CO, H₂S), it survives a 7.5 m drop, holds an IP68 rating, and logs data to the cloud for real-time visibility of workers and worksites. Weighs approx. 261 g (9 oz).