Features 1. The accuracy is within ±1 PSI. The tire pressure gauge supports up to 200 PSI and has 4 optional units: PSI, BAR, KG/CM², KPA. 2. The digital tire pressure gauge is easy to calibrate, easy to read, and displays test values within 2–3 seconds. If there is no operation within 15 seconds, it will automatically shut down to save battery power. The data can be clearly read in the dark. 3. In addition to reading tire pressure, it can also deflate and inflate. When the tire pressure is too high, the bleed valve helps release air. When the air pressure is too low, connect an air compressor and press the "inflate" button to begin inflating the tires. 4. Constructed with heavy-duty stainless steel, brass, thick silicone protective cover, and heavy-duty rubber hose for durability, corrosion resistance, and long-lasting performance. 5. Helps improve fuel efficiency, extend tire life, reduce vehicle strain, and enhance driving comfort and stability. Specification Item Type: Tire Pressure Gauge Kit Material: Aluminum Alloy, Copper, Rubber Display Mode: LCD digital display Pressure Unit: PSI, KPa, Bar, KG/CM² Measuring Range: 3–200 PSI / 14 BAR / 14 Kgf/cm² Measurement Accuracy: (3–100 PSI) ±1 PSI, over 100 PSI ±2 PSI Working Temperature: -20℃ to 60℃ Key Functions: Switch key (left), unit switch key (right) Working Voltage: DC 3.1V (2 pcs 1.5V AAA batteries); battery replacement recommended when voltage drops below 2.5V (LCD battery indicator will flash) Battery: 2 x AAA 1.5V batteries (not included) Working Current: ≤3 mA or less (with backlight); ≤1 mA or less (without backlight) Quiescent Current: ≤5 μA Scope of Application: Motorcycles, cars, small and medium passenger trucks How to Use: 1. Unscrew the tire valve cap. 2. Attach the copper head of the device securely onto the valve stem. 3. The device will display the current tire pressure. 4. If inflation is needed, connect an air compressor to the air nozzle and press the "inflate" button while holding the handle. For deflation, press the bleed valve to release excess air. 5. After measurement or adjustment, remove the copper head and press the vent button to reset the indicator to zero. Package List 1 x Threaded Air Nozzle 1 x Valve Core Opening Tool 1 x 90-Degree Extended Inflatable Nozzle 1 x Sealing Tape 1 x US Standard Air Intake Male Connector 1 x Japanese Standard Air Intake Male Connector 4 x Tire Valve Caps 1 x Digital Inflator 1 x White Cushion