Colorful LCD digital display clearly shows tire information Wireless connection via external sensors for easy installation Real-time automatic monitoring and warning for low tire pressure, high tire pressure, rapid air leak, high tire temperature, and low battery voltage Accurately receives signals to truthfully and intuitively reflect tire pressure conditions Note: The host must be turned on before installing the sensor. Press and hold the left button for 3 seconds Functions: Real-time monitoring of pressure and temperature for 4 tires Low air pressure and high tire pressure alarm High temperature, leakage, and low battery alarm Specifications: External sensor working temperature: -20C to 60C Size: As shown in image Power source: 2 x AAAA battery (not included) Color: Black Material: ABS + metal Package Contents: 1 x Tire Pressure Monitor 4 x External Sensor 4 x Nut 1 x Wrench 1 x Non-Slip Mat 1 x English Manual Only the above package content is included; other items are not included Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm