Bluetooth / AUX transmitter / receiver, receiver / transmitter

Portable stereo receiver / transmitter with built-in rechargeable battery with two sound transmission modes.

Transmitter mode:
It wirelessly transmits audio from your TV, home system or CD player to your Bluetooth headphones or speakers.
(aux-OUT → Bluetooth-IN)

Receiver mode
It wirelessly transmits audio from a Bluetooth phone, tablet or computer to speakers or headphones.
(Bluetooth-OUT → aux-IN)

Switch between transmitter and receiver modes by simply moving the switch. Easy connection with advanced Bluetooth technology and 3.5 mm audio cable.

Specifications:
Model: KN321
Technology: BT5.0, A2DP, AVRCP (receiver mode only)
Operating range: up to 10m
Pairing name: KN321
Charging time: 2 hours
Working hours: RX: 6 hours; TX: 5 hours
Battery type: Li-Polymer (200 mAh)
Dimensions: 44 × 44 × 12 mm
Weight: 18 g

Instructions
To turn on: Press and hold the on / off button until the LED lights up
To switch off: Press and hold the on / off button until the LED goes out

Charging: Use a DC-5V charger and a micro usb charging cable. The red indicator light is on during charging.

Switching mode:
1) RX: receive mode, indicator: blue LED
2) TX: Transmission mode, indicator light: red LED

RX mode:
Pairing name: KN321 / KN319, search for KN321 / KN319 in the Bluetooth settings of the phone you want to pair. The blue light flashes twice per second during pairing and the blue light flashes once every three seconds after successful pairing.
how to use:
1) Connect one end of the audio cable to the audio input of the speaker and the other end to the KN321 audio
2) verify that it is in RX mode (blue light flashes). You can find the pairing name in the Bluetooth phone settings: KN321 / KN319 Click to pair.

TX mode:
TX mode automatically searches for other Bluetooth receiving devices (such as a Bluetooth headset, Bluetooth speaker, Bluetooth receiver, etc.), the red light flashes twice per second during pairing, and the red light flashes every three seconds after pairing is successful.
How to use:
1) Connect one end of the audio cable to the audio output of the device and the other end to the KN321 / KN319 reverb.
2) Check if it is in TX mode (red light flashing). The KN321 automatically searches for a pairing of a Bluetooth headset or Bluetooth speakers.

The product is not a stand-alone unit, it requires professional installation.