Adopts quality pressure sensor, high accurate ADC and low consumption MCU. indoor temperature measurement digital manometer, with wide-range, high resolving and high measuring accuracy. Multifunctional, with temperature/pressure measurement and store function, low electricity remind function, data hold function, max/min value mode, DIF mode and etc.. There are 12 pressure units adjustable, you can adjust to mmHg, inHg, ftHO, cmHO, inHO, Pa, KPa, mbar, bar, psi, Kgcm and ozin. Equipped with digital display, you can see the data clearly. Quickly measuring real time pressure value through single-channel, and detect the pressure differences of two detection ports through two channel. It is suitable for measuring of ventilation and condition system, and widely use for gas measurement, calibration, and other troubles of pressure system. Name: Digital Manometer Display: LCD Battery: 1 * 6F22 battery, 9V, 250mAh (not included) Pressure measurement-range: 2.999psi Accuracy: 0.3%FSO (at 25) Data storage quantity: 100 Max pressure: 20KPa Units: / switchable Lower battery remind: 6.8V Automatic close: 15min after no operation Working temperature: 0-50(32-132) Storage temperature: -10 to 60 (14-140) Item size: 159 x 76 x 32mm / 6.26 x 2.99 x 1.26in Carrying bag size: 180 x 110 x 30mm / 7.09 x 4.33 x 1.18in Item weight: 260g / 9.17ounce color:Black+orange Material:ABS Package Contents: 1 x Digital Manometer 2 x Tube 1 x Adapter 1 x Guideline 1 x Carrying Bag Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.