Simultaneous sound function. With a single switch, it can be switched to suit vehicle inspections (not all vehicle inspections). Thank you for your understanding. We have changed the outer box. Thank you for your understanding. Product specifications are not altered.
Do not use on public roads. Please read the installation instructions carefully before making your work. There may be some dirt and scratches on the package. [We inspect before shipment, but in the event that there is a defective product after arrival, please contact us within 7 days of arrival. ]