1. Product weight: 280g 2. Product material: metal 3. Product size: length 5.5cm diameter 6.5cm 4. Backlight Color: Yellow 5. Installation aperture: about 9.70mm 6. Working voltage: DC 12V 7. Wiring method: The red wire is connected to the positive level, and the black wire is connected to the negative pole (the positive wire of the electric door lock, so that the instrument will light up when the key is turned on) - Note: The mechanical kilometers are applicable to the ones with the kilometer line 8. Delicate and compact, durable, waterproof and dustproof, easy to install
