Item Type: Digital Manometer_x000D_ Material: ABS_x000D_ Color: As shown in the picture_x000D_ Size: Approx. 150x55x40mm / 5.91x2.17x1.57in _x000D_ Weight: Approx.200g/7.1oz_x000D_ Range: +5psi_x000D_ Accuracy: 0.3%FS_x000D_ Linearity/Hysteresis: 0.1% FS of full scale_x000D_ Pressure Range: 2Psi_x000D_ Repeatability: 0.25%FS_x000D_ Response Time: 0.5 seconds_x000D_ Pressure Connection: Two 1/8in (3.18mm) quick connectors_x000D_ Working Temperature: 0~50C (32~122F)_x000D_ Storage Temperature Range: -10~60C (14~140F)_x000D_ Battery Type: 9V battery (not included)_x000D_ _x000D_ Operation Method:_x000D_ First open the back cover, install the battery, press and hold the power button for 2 seconds to start up, the screen displays the parameters, adjust the measurement range, you can use it._x000D_ _x000D_ Function:_x000D_ 1.11 air pressure units_x000D_ 2. Differential pressure measurement_x000D_ 3. Maximum, minimum, average pressure value recording and viewing function_x000D_ 4. Data retention function_x000D_ 5. Large backlit display_x000D_ 6. Low battery reminder function_x000D_ 7. Optional automatic shutdown function_x000D_ 8. Over-range prompt function_x000D_ 9. Calibration function_x000D_ _x000D_ Pressure functional unitRangeResolution_x000D_ Kpa34.470.01_x000D_ Psi50.001_x000D_ kgfcm20.3510.001_x000D_ ozin2800.1_x000D_ Bar0.3440.001_x000D_ Mbar344.70.1_x000D_ inHg10.180.01_x000D_ mmHg258.50.1_x000D_ inH?O138.30.1_x000D_ ftH?O11.530.01_x000D_ cmH?O351.50.1