Differential Manometer, Maximum Pressure 60 in wc, Minimum Pressure -60 in wc, Accuracy +/-( 0.1 in wc + 1.5 Percent of mv) (0 to 60 in wc), +/- 0.02 in wc (0 to 0.4 in wc), Includes Batteries Batteries Included, Process Connection Size 1/8 in, 1/4 in, Process Connection Type Hose Barb, Wireless Connectivity Bluetooth, Series Not Applicable, Alarm No, Application Air, Auto Power Off Yes, Batteries Required Yes, Battery Type (3) AAA, Calibration Certificate Included Yes. This item has been restricted from sale in the following state (s): []