UGREEN Bluetooth Adapter - RCA and 3.5mm Jack

Yes, for continuous use, it should be connected to a USB power source. It has a built-in battery that allows for up to 8 hours of playback when not connected to external power.

Yes, if your car stereo has a 3.5mm AUX input or RCA audio inputs, you can use this receiver to stream music wirelessly from your phone.

The receiver can be paired with multiple devices, but it can only actively stream audio from one source device at a time. It supports connection to two speakers simultaneously.

Both outputs transmit audio. The 3.5mm output is a single jack, typically used for headphones or smaller speakers. The RCA outputs (usually red and white) are common for stereo audio systems and allow connection to two separate channels (left and right).

As long as your speakers have a standard 3.5mm or RCA audio input, this receiver should be compatible. It effectively turns any audio device with these inputs into a Bluetooth-enabled device.

The receiver features LED indicators. Typically, a red light indicates charging, and it may turn off or change color when fully charged.

Ensure the receiver is powered on and charged. Check that the audio cables are securely connected to both the receiver and the audio device. Verify that your audio source device is paired with the receiver and that the volume is turned up on both the source device and the speakers.

Make sure the receiver is in pairing mode (check LED indicators). Turn off and on the Bluetooth on your source device, then try pairing again. If you have multiple Bluetooth devices, ensure the receiver is not already connected to another device. Try resetting the receiver by unplugging it from power and plugging it back in.

Ensure your Bluetooth source device is within the 10-meter transmission range and that there are no significant obstructions between the device and the receiver. Reduce the number of active Bluetooth connections or other wireless devices that might be causing interference.

Try using a different Micro USB cable and a known-good USB power adapter. Ensure the power source is providing adequate power (recommended DV 5V/2A Max).