Quick view Honeywell Analytics Honeywell 301C Gas Monitor Controller Compare MSRP: $1,666.00 - $5,169.00 Description Resource Information Designed for simple installation and operation, the 301C continuously monitors and controls toxic gases, combustible gases and oxygen hazards. Product Overview:Using an addressable RS-485 Modbus communication... Choose Options Choose Options Add to Wish List Add to My Wish List Create New Wish List