PLEASE NOTE: All products sold by WTMtronics should be considered for off-road, race-use only. No product is designed or tested for compliance with EPA or NHTSA regulations, nor similar agencies in countries outside the USA. Therefor it is likely illegal to use on highway. No matter the location of use, you do so at your own risk. There is no warranty expressed or implied. WTMtronics, its employees and affiliates will not be liable for any loss to equipment, person, or any other type.