Digital Tire Pressure Gauge LCD Display Four Unit 3‑200PSI Wheel Tyre Air Inflator Monitoring Tester M11x1 Thread Blue Backlight Item Type: Digital Tire Pressure GaugeMaterial: ASB, copperThread Specification: M11x1 Product Features: Copper connector, high sensitivity voltage sensor, large screen LCD digital display, four units convertible Application: Motorcycle, car, medium sized passenger van, truck, bus Pressure Unit: Four units can be switched Psi, Kpa, Bar, Kgf/Cm^2 Measuring Range: 3~200psi Operating Temperature: -20 To 60°C Key Function: Left button switch background light, right button on or off or unit switch key, there is air pressure into the automatic detection switch, no manual operation. With LED backlight, left button press and hold 3-5S to turn on or off Working Voltage:DC 3.1v Battery: Pair of 1.5V AAA battery (not included)When the battery voltage is below 2.5V, the LCD battery symbol flashes Working Current: ≤3MA Or Less (With Backlight); ≤ 1MA Or Less (Without Backlight)