Using high-quality pressure sensors, high-precision ADC and low-power MCU. Indoor temperature measurement digital pressure gauge with wide range, high resolution and high measurement accuracy. Multifunctional, with temperature/pressure measurement and storage functions, low battery reminder function, data retention function, maximum/minimum value mode, DIF mode, etc. There are 12 adjustable pressure units, which can be adjusted to mmHg, inHg, ftH2O, cmH2O, inH2O, Pa, KPa, mbar, bar, psi, Kgcm and ozin. Equipped with a digital display, the data is clear at a glance. Quickly measure the real-time pressure value through a single channel, and detect the pressure difference between the two detection ports through two channels. It is suitable for measurement of ventilation and working condition systems, and is widely used for gas measurement, calibration and other faults of pressure systems. Name: Digital Pressure Gauge Display: LCD Battery: 1*6F22 battery, 9V, 250mAh (not included) Pressure measurement range: 2.999psi Accuracy: 0.3%FSO (25 hours) Number of data storage: 100 Maximum pressure: 20KPa Unit: / available Switch low battery reminder: 6.8V Automatic shutdown: 15 minutes after no operation Operating temperature: 0-50 (32-132) Storage temperature: -10 to 60 (14-140) Product size: 159 x 76 x 32mm / 6.26 x 2.99 x 1.26 Handbag Dimensions: 180 x 110 x 30 mm / 7.09 x 4.33 x 1.18 inches Product Weight: 260 g / 9.17 oz Color: Black + Orange Material: ABS Package Contents: 1 x Digital Pressure Gauge 2 x Tube 1 x Adapter 1 x Guide 1 x Tote bag only contains the above packaging contents and does not include other products. NOTE: Light reflections and different monitors may cause the color of the item in the picture to differ slightly from the actual item. The measurement allowance is +/-1-3cm./ Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.