The 358501-A1A-T1 Granville-Phillips® Micro-Ion® Vacuum Gauge Controller is designed to obtain the highest performance from Granville-Phillips® Micro-Ion® Gauges. It is capable of measuring from a lower limit in the 10^-10 Torr range to 5x10^-2 Torr. Pressure measurements are extended to Atmosphere with the Dual Convectron® Vacuum Gauge card. This reliable vacuum gauge controller is compact and easy to use. The extruded aluminum, half-rack design fits easily into your 19 inch control rack. Infrequently used controls are located behind the front panel door to provide an uncluttered appearance. Large, bright green, flicker-free LED digital displays make measurements easy to read - even from a distance. Integration into computer-controlled systems is also possible through the RS-232 interface. Two setpoint relays can be used to control a variety of system functions such as switching valves, setting interlocks, and setting alarms. It includes 120V power plug for use in North America or Japan.