Digital Manometer HVAC, Gas Pressure Tester with ±0.3% FSO Resolution, Auto-off Differential Pressure Manometer Tester, Portable Air Pressure Gauge with LCD Backlight, 11 Optional Units ✅ Precision Pressure Measurement – Accurately measures positive, negative, and differential pressure (±206.8 kPa / ±30 psi) with ±0.3% FS accuracy, ideal for HVAC systems, automotive diagnostics, and duct testing. ✅ 11 Pressure Units & Smart Features – Switch between kPa, bar, psi, mbar, inHg, and more with one button. Includes data hold, MAX/MIN/AVG recording, and overpressure alarm to prevent damage. ✅ 50 Data Storage & Auto Shutdown – Store up to 50 readings for later review. Set auto power-off (5/10 mins) or use manual shutdown to save battery life. ✅ Durable & Portable Design – TPU protective sheat.
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