This is a MKS Granville Phillips Dual Convectron Gauge PCB Printed Circuit Board Card (module) for MKS Granville Phillips 307 Vacuum Gauge Controller. Permits pressure measurements from 1 x 10^-4 to 990 Torr (N2 equivalent) from two MKS Granville-Phillips Series 275 Convectron Gauges simultaneously. Two channel (A/B) modules allow for automatic turn-on and shut-off of ion gauges based on Convectron pressure. Also provides analog output of each indicated pressure. For Dual Convectron Card (module) installation procedures see page 17-26 of instruction manual. For specs, procedures for use and set up of the module, see Chapter 3 of the instruction manual. This is the Dual Convectron Card Module ONLY, MKS Granville Phillips 307 Controller, Cables and Accessories sold separately on this website. The MKS Granville Phillips 307 Vacuum Gauge Controller Instruction Manual.pdf can be downloaded below at DOWNLOADS: