Low battery indicator and pressure unit indicator. Accuracy: ±0.3%FSO(25°C). InH2O Range: ±55.40; Resolution: 0.01. Mbar Range: ±137.8; Resolution: 0.1. Kpa Range: ±13.79; Resolution: 0.01. InHg Range: ±4.07; Resolution: 0.001.
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