BTMETER BT-189A 2Psi Air and Gas Pressure Tester for Differential/Positive/Negative Pressure HVAC Differential

📌【High Precision Pressure Gauge】HP-189A uses high-quality pressure sensor, which can be used to measure differential pressure, positive pressure and negative pressure. Limit maximum pressure: 6Psi, accuracy: ±0.3%FS. The measurement is accurate, fast and sensitive. 📌【Complete Functions】HP-189A digital gas pressure tester is easy to operate, with practical functions such as over-range prompt, MAX/MIN/AVG, data hold, data record, difference display, backlight, low battery prompt and automatic shutdown. 📌【11 Units Available】This differential manometer has 11 built-in units available: inH20, psi, bar, mbar, kPa, inHg, mmHg, Ozin2, ftH20, cmH20, kgcm2. 📌【Large LCD Display】Although this hvac gas pressure tester is compact and portable, it is equipped with a large-scale display, high-definition display, and the reading is faster and clearer. 📌【Wide Application】HP-189A digital manometer is suitable for the measurement of ventilation and air conditioning systems, on-site calibration, and troub