Features: With digital display, intuitive observation Accurate and stable parameter display, low power consumption Easy installation, stable performance, anti-vibration and shockproof When the alarm display flashes in alarm Suitable for car, motorcycle or according to your needs. Measuring object: compressed air, Specification: Name: 4 in 1 LCD Car Gauge (Air Temperature/Air Pressure/Voltage Gauges) Power supply: DC 9V - 36V Red --- Power + (Red black) --- Power - Accuracy: +/-1% Measuring speed: 3-5 seconds Measuring range: 0-1.0M Air resistance range: 5-1000Ω Voltage test range: 9-39V Air temperature measuring range: -10-120°C Air temperature sensor screw: M10 Air pressure sensor: 1/8 NPT Material: Plastic Color: Black Package Contents: 1 x 4 in 1 LCD Car Gauge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/