ITEM NAME:Portable Mini 3In1 Zf169Plus Bluetooth 5.0 Transmitter Receiver 3.5Mm Aux U R8J8 Portable Mini 3In1 Zf169Plus Bluetooth 5.0 Transmitter Receiver 3.5Mm Aux U R8J8 Receiver mode: blue LED light is on. 1. This extremely portable, lightweight wireless audio transmitter and receiver is the perfect wireless audio solution for every situation and application. 2. Transmitter mode: wirelessly transmits audio from a non-Bluetooth TV, home stereo system or CD player to a Bluetooth headset or speaker. Computer Audio Transmitter Mode: Wirelessly transfers audio from your computer to a Bluetooth headset or speaker (via USB port, no audio cable required). 3. Receiver mode: wirelessly transfer audio from a Bluetooth-enabled phone, tablet or computer to cable stereo, speakers or headphones. 4. Mode switching: Use the TX/RX toggle switch to switch modes. 5. Pairing method Technology: BT5.0, A2DP, AVRCP (receiver mode only) Working range: 10 meters / 33 feet (no obstacles) Pairing name (receive mode): ZF-169Plus. Transmitter mode: red LED light is on color: Black material: plastic RX mode: Pairing name: ZF-169 Plus, find ZF-169 in the Bluetooth settings of the phone to be paired Plus. The blue light flashes during the pairing process, and the blue light stops flashing after the pairing is successful. Connect the product to an audio device using a 3.5 audio cable. TX mode: TX mode automatically searches for other Bluetooth receiving devices (such as Bluetooth headset, Bluetooth speaker, Bluetooth receiver, etc.). When pairing, the red light flashes and the red light stops flashing. After the pairing is successful. Connect the product to a device such as a TV with a 3.5 audio cable/RCA audio cable. Use TX mode on the PC: Plug the USB into the USB port of the computer and automatically search for other Bluetooth receiving devices (such as Bluetooth headset, Bluetooth speaker, Bluetooth receiver, etc.). When pairing, the red light flashes and the red light stops flashing. 6. Ult