Features: 2.8-inch large LCD backlit display for clear reading. 12 measurement units selected:kPa,psi,kg /cm; ozin,bar,mbar,inHg,mmHg,inH2O,ftH2O,cmH2O. Low battery indicator and pressure unit indicator. Zero adjustment, offset and DIF functions. Automatic / manual power off function. Data retention and auto-shutdown. Suitable for measurement and on-site inspection of ventilation and air conditioning systems, corrective maintenance of clean rooms or any gas pressure system. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Specification: Display: 2.8 inches Unit:kPa,psi,kg /cm; ozin,bar,mbar,inHg,mmHg,inH2O,ftH2O,cmH2O,Pa Optional pressure range: 2.999 psi Accuracy: FSO 0.3% (at 25 degree centigrade) Repeatability: 0.2% (maximum 0.5% FSO) Response time: 0.5 seconds Overrange indicator: Err 0 Under the range indicator: Error 1 Temperature: -40 to 80 degree centigrade (-40 to 176 degree fahrenheit Operating conditions: 0 to 50 degree centigrade (32 to 122 degree fahrenheit) Storage conditions: -10 to 60 degree centigrade(14 to 140 degree fahrenheit Battery: 9V battery (not included) Size: 164 x 70 x 32 mm includes:1x Pressure gauge 2x Plastic tube 1x Metal connector 1x User manual About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.