MSA GasGard XL Controller

The Gasgard Controller is a versatile and easy to use controller for
monitoring toxic and combustible gasses, and oxygen deficiency. It
can be easily configured to accept up to eight remote gas sensors,
depending upon plug-in cards installed. The GasGard XL Controller
offers reliability in a compact, durable, wall-mounted housing
constructed of fire-retardant ABS. Fully configurable via USB or RS485
Modbus connection.