The 2022P7 measures in scales of Mbar, PSI, KPA, inH2o, mH20, mHG, inHG. Series offers twin input for differential, positive and negative pressure measuring. Gauge pressure models and other pressure range models available on request from 25mBar to 10Bar Ambient Operating Temperature: 0C to +50C Battery Type: Two AA or equivalent cells (not supplied) Battery Life: Typically 200 hours Low Battery Check: symbol appears on display Over range/Under range 'Out' displayed Environmental Specifications: IP67 as standard with hose connected Auto Switch-Off Time: 12 minutes Dimensions: 155 x 67 x 40mm/6.1 x 2.6 x 1.6 Weight: 180g/6.4oz Instrument accuracies From -10C to +50C 0.15%rdg +0.15%fs + 1 digit. 0.3%rdg +0.3%fs to +1 digit (-Ve Pressures