Overview Provides terminals for field wiring for the R7999A ControLinksâ„¢ Fuel Air Controller. Terminals on the R7999A,B Controller engage the Q7999 contacts to make electrical connections. The Q7999A Subbase is panel-mounted. Features Quick-mount wiring subbase for R7999A,B Fuel Air Ratio Controllers. Allows wiring of control system before installation of controller. Panel-mounted. NEMA 1 enclosure. Product Specifications Frequency50 Hz; 60 HzApprovals, Underwriters Laboratories Inc.Listed: Report No. MH17367Operating Humidity Range (% RH)5 to 95% RH, non-condensingVoltage100 to 120 VacShipping and Storage Temperature Range (F)-40 F to +150 FShipping and Storage Temperature Range (C)-40 C to +65 CVibration0.0 to 0.5g continuousWeight (oz)10 ozWeight (g)0.28 kg