The MSA Altair pump probe is for use with the MSA Altair 4X multi gas monitor in pumped applications. This is ideal when the diffusion monitor will not suffice in application. This probe does not include the charger, but is compatible with the Altair 4X charger. Being constructed in a durable outer shell that is the same as the Altair 4X, it is incredibly durable and boasts an IP65 dust and water ingress protection and drop resistance up to 10 feet.Features and Benefits Durable outer shell and IP65 dust and water ingress protection allows it to be used in a variety of environments Probe sensor allows it to be used in applications where diffusion monitors do not suffice