Features 【Accuracy upgrade】: This digital pressure gauge has a wide measurement bandwidth of ±30Psi (206.8Kpa) and a high accuracy level of ±0.3% FS to ensure the accuracy of measurement results. 【Unit switching】: Easily switch between 11 measurement units - PSI, kPa, Kgcm², ozin², bar, mbar, inHg, mmHg, inH2O, ftH2O and cmH2O. One machine has multiple uses, meeting the needs of accurate measurement in more scenarios. 【Comprehensive functions】: Experience a smarter way of use, equipped with data retention, maximum/minimum/average recording, easy-to-read large backlit LCD screen, timely low battery warning and intelligent automatic shutdown function to improve measurement convenience. 【Data recording】: This air pressure measuring instrument can store up to 32 sets of time-stamped data records, making data tracing and in-depth analysis simple and fast, and meeting the high requirements of professional applications for data detail. 【Wide range of applications】: Ideal for monitoring pressure in aerodynamic and ventilation systems, suitable for calibration of pressure systems, fault diagnosis, maintenance and installation of HVAC systems, gas equipment, and high-Accuracy testing work in laboratory environments. Specification: Item Type: Digital Manometer Material: ABS, TPU Accuracy: ±0.3%FS Linearity Hysteresis: ±0.1%FS of full scale Limit Maximum Pressure: 206.8Kpa (Overrange use will damage the instrument) Repeatability: ±0.25%FS Measurement Response Time: About 0.5 seconds (25℃±2℃) Pressure Connection: One 1/8in (3.18mm) quick connector Operating Temperature: 0℃ to 40℃ Storage Temperature Range: -10℃ to 60℃ Overrange Prompt: HI (Please stop using if this prompt appears, overrange use will damage the instrument) Battery: 1 x 9V battery (Not included) Battery Model: 6F22 9V battery packing list: 1 x Digital Manometer 1 x Hose 1 x Metal Adapter 1 x Black Head 1 x User Manual 1 x Storage Box Package List 1 x Digital Manometer 1 x Hose 1 x Metal Adapter 1 x Black Head 1 x User Manual 1 x Storage Box