Features 1. With quick connection, air pressure measurement, deflation, and inflation functions, this premium tire pressure gauge offers reliable performance for maintaining optimal tire pressure. 2. Features an LCD digital display with high precision, allowing easy pressure calibration and clear reading; test results are displayed within 23 seconds. 3. Auto power-off function shuts down the display after 15 seconds of inactivity to conserve battery life. Backlight ensures clear visibility in low-light conditions. 4. Built-in bleed valve allows controlled air release when tire pressure is too high. For low pressure, connect to an external air compressor (not included) and press the inflate button to add air. 5. Supports four switchable pressure units: PSI, KPa, Bar, and Kgf/cm, allowing customization based on user preference. Specification Item Type: Tire Pressure Gauge Material: Rubber + Aluminum Alloy + Copper Display Mode: LCD digital display Pressure Unit: PSI, KPa, Bar, Kgf/cm (switchable) Measuring Range: 3200 PSI / 314 BAR / 314 Kgf/cm Measurement Accuracy: (3100 PSI) 1 PSI; above 100 PSI 2 PSI Working Temperature: -20C to 60C Buttons: Power button (left), unit switch button (right) Working Voltage: DC 3.1V; replace batteries when voltage drops below 2.5V (LCD battery indicator will flash) Battery: 2 x AAA 1.5V batteries (not included) Working Current: 3 mA (with backlight), 1 mA (without backlight) Quiescent Current: 5 A Application: Suitable for motorcycles, cars, small and medium-sized trucks, and buses. Package List 1 x Tire Pressure Gauge