PD 3.0 Car Bluetooth Adapter/Radio Transmitter

about this project [Shutdown function] Just want to charge the phone, don't want to disturb the car frequency? Now you only need to press and hold the "Shutdown" button for two seconds to enter the shutdown state, and short press any button to turn it on. Note: Turn off the power by mistake to turn off the digital display, disconnect the Bluetooth and turn off the backlight, and keep the charging function. 3 USB Ports & QC3.0 Fast ChargingThe FM transmitter has 3 USB ports. Through the QC3.0 port, you can truly experience the fast charging of QC3.0 devices. The USB charging port 5V / 2.4A can charge your devices quickly and efficiently. The 5V/1A USB port with music icon can read up to 32GB USB flash drive and let you play music. [1-inch display screen] The 1-inch screen displays the Bluetooth image, and the Bluetooth icon does not jump to indicate that the Bluetooth is connected. If the car voltage is displayed, you can know the car battery voltage in time. Enable Siri and Hands-Free CallingThe Bluetooth FM transmitter supports voice commands using Siri or Google Assistant to text or get directions. Enjoy full voice control while driving. Hands-free calling is also supported. Simply press the FM "Phone" button to answer/connect/reject/make calls, switching seamlessly between incoming calls and music. Make driving easier and safer. Multiple ProtectionsBuilt-in intelligent IC, over-current protection, surge protection, intelligent temperature control, short-circuit protection. The Bluetooth FM transmitter effectively avoids multiple uncertainties. The car FM transmitter also displays car voltage when connected to a car cigarette lighter. Let you keep abreast of the status of the battery.