"Rapidox 1100Z-RSO bench mounted zirconia oxygen gas analyser for 1ppm to 30% oxygen analysis with the additional facility of a remote signal out option. This can be used to power an external solenoid valve controller on/off for crude process control (outgoing 24V signal, max 10W power); an alarm output is sacrificed to accommodate this facility. Front mounted gas fittings, F, are standard; if you require rear mounted gas fittings, R, please state preference on order (available at same price)."