... C6,C7,C8,C14 optional ac/dc adpater switching power adapter Spec. as following:Input Rated Voltage :100Vac~240VacInput Frequency ... B Class BAN/NZS CISPR 22:2006Application:can fit UK US Euroepan market ,and can been used by Bluetooth device ... profesional factory of swtiching mode power supply, power adapter ,usb charger, laptop adapter, ac/dc adapter, Led driver, dimmable led driver, waterproof ...