Teledyne Hastings Digital Flow ControllerRanges from 0-2500 slm to 0-10,000 slm, High Flow ProductsPN HFM-D-308BHFC-D-308BOutput*0-5 Vdc (Standard)Fittings*1/4" Swagelok (Standard)Working Pressure*500 PSIG (Standard)Calibration Records*1 Calibration Certificate (Standard)Digital*RS232 (Standard)Display*No Display (Standard)Quantity*Add to CartPrice shown is with all selections as standardIf customization is needed please email requirements or call for more info