Teledyne Hastings Digital Flow Meter (Ranges from > 0-10 sccm to 0-25 slm), Low Flow Products, PN HFM-D-300B-HHFM-D-300B-HOutput*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