Adopts quality pressure sensor, high accurate ADC, and low consumption MCU. Indoor temperature measurement digital manometer with wide range, high resolution, and high measuring accuracy. Multifunctional with temperature and pressure measurement, data storage, low battery indicator, data hold, max/min value mode, DIF mode, and more. Features 12 selectable pressure units: mmHg, inHg, ftH2O, cmH2O, inH2O, Pa, kPa, mbar, bar, psi, kg/cm², and oz/in². Equipped with digital LCD display for clear reading. Quickly measures real-time pressure via single channel and detects pressure differences between two ports using dual channels. Suitable for ventilation and air conditioning systems, gas measurement, calibration, and general pressure system diagnostics. Name: Digital Manometer Display: LCD Battery: 1 x 6F22 battery, 9V, 250mAh (not included) Pressure measurement range: ±2.999 psi Accuracy: 0.3% FSO (at 25°C) Data storage capacity: 100 readings Max pressure: 20 kPa Units: Switchable Low battery indication: 6.8 V Auto power-off: 15 minutes after inactivity Operating temperature: 0–50°C (32–132°F) Storage temperature: -10 to 60°C (14–140°F) Item size: 159 x 76 x 32 mm / 6.26 x 2.99 x 1.26 in Carrying bag size: 180 x 110 x 30 mm / 7.09 x 4.33 x 1.18 in Item weight: 260 g / 9.17 oz Color: Black + Orange Material: ABS Package Contents: 1 x Digital Manometer 2 x Tubes 1 x Adapter 1 x User Guide 1 x Carrying Bag Note: Light reflection and screen differences may cause slight color variation between image and actual item. Measurement error allowance is +/- 1–3 cm.