Digital Vacuum Gauge HVAC Micron Gauge Tester 0-75000 Microns, HVAC Vacuum Pressure Gauge with Audible Alarm, 7/16-20 UNF 1/4" SAE Port, Backlit LCD, T-Connector&Extension Adapter for AC Refrigeration

This Digital HVAC Vacuum Gauge is designed to provide accurate micron measurement for HVAC and refrigeration system evacuation. With a measurement range of 0–75,000 microns, it helps technicians verify proper vacuum levels and evaluate vacuum pump performance during system servicing. The gauge features a large backlit LCD display for clear real-time readings and supports multiple units including Pa, mBar, mmHg, and Micron. Users can set a custom alarm value, and the built-in buzzer will sound while the backlight flashes when the preset vacuum threshold is reached. Equipped with a 1/4” SAE port (7/16-20 UNF), the gauge is compatible with most HVAC service hoses and tools. The kit includes a T-connector adapter and 1/4” SAE extension connector, allowing flexible connection during vacuum testing. Compact, reliable, and easy to use, this HVAC micron gauge is ideal for HVAC system evacuation, refrigeration maintenance, and vacuum pump diagnostics.

• HVAC Vacuum Gauge Kit: This upgraded digital vacuum gauge kit includes 1 micron gauge, 1/4” SAE extension connector, T-type connector, storage bag, and user manual. Designed for professional HVAC technicians, it provides accurate vacuum measurement for air conditioning, refrigeration, and HVAC system servicing
• Precise Micron Measurement: Measures vacuum levels from 0 to 75,000 microns with ±5% accuracy, making it ideal for vacuum pump performance testing, micro-leak detection, and system evacuation verification. The gauge offers 1-micron resolution around critical vacuum ranges for precise diagnostics
• Rugged HVAC-Optimized Build: Built for demanding HVAC environments with 14 PSI over-pressure protection and a 1/4” SAE flare port (7/16-20 UNF) compatible with most HVAC tools and hoses. Operates reliably in 32-122°F (0-50°C) environments and supports multiple units including Pa, mBar, mmHg, and Micron
• Smart Alarm & Real-Time Monitoring: Equipped with a large backlit LCD display and 0.5-second fast refresh rate for clear real-time readings. Users can set custom vacuum thresholds. When the preset vacuum threshold is reached, the built-in buzzer sounds and the backlight flashes to alert the user
• Energy-Saving & Easy Maintenance: Features automatic backlight shut-off and 10-minute auto power-off to extend battery life. The sensor design allows easy cleaning—simply rinse with alcohol and air dry for optimal performance. Ideal for routine HVAC system evacuation and maintenance tasks