1. Pengenalan
This manual provides detailed instructions for the SOOMFON BT021 Bluetooth 5.3 2-in-1 Transmitter Receiver. It covers product features, setup, operation, maintenance, and troubleshooting to ensure optimal performance and user experience. Please read this manual thoroughly before using the device.

Image 1: SOOMFON BT021 Bluetooth 5.3 2-in-1 Transmitter Receiver. This image displays the compact device with its 3.5mm audio jack, control buttons, and mode switch.
2. Produk Lebihview
The SOOMFON BT021 is a versatile Bluetooth 5.3 adapter designed to function as both a transmitter (TX) and a receiver (RX). It enables wireless audio streaming for various devices, enhancing connectivity for non-Bluetooth enabled equipment.
2.1 Ciri-ciri Utama
- Teknologi Bluetooth 5.3: Provides stable and efficient wireless audio transmission with low latency.
- Fungsi 2-dalam-1: Operates as both a Bluetooth audio transmitter and receiver.
- Mikrofon terbina dalam: Supports hands-free calling in receiver mode.
- CVC 8.0 Noise Cancellation: Reduces background noise for clearer calls.
- Audio yang berkualiti tinggi: Professional HD audio decoding chip for quality sound.
- Hayat Bateri yang Panjang: Up to 8 hours in RX mode, 6.5 hours in TX mode.
- Keserasian Luas: Connects to devices with 3.5mm audio input/output.
2.2 Kandungan Pakej

Image 2: Package contents of the SOOMFON BT021. This image shows the Bluetooth adapter, a USB-C charging cable, a 3.5mm auxiliary cable, a 3.5mm connector, and the user manual.
Sila sahkan bahawa semua item terdapat dalam pakej:
- SOOMFON BT021 Bluetooth 5.3 Transmitter Receiver x1
- Kabel Pengecas USB-C x1
- 3.5mm Auxiliary Cable x1
- Penyambung 3.5mm x1
- Manual Pengguna x1
3. Reka Letak Peranti

Image 3: Diagram illustrating the various parts and controls of the SOOMFON BT021. It highlights the 3.5mm audio port, microphone, multi-function button (MFB), volume/track control buttons, TX/RX mode switch, and charging port.
- Port Audio 3.5mm: Untuk menyambung ke peranti input/output audio.
- mikrofon: Untuk panggilan bebas tangan.
- Butang berbilang fungsi (MFB): Power ON/OFF, Play/Pause, Answer/End Call, Reject Call, Redial.
- Volume + / Next Track Button: Tekan pendek untuk kelantangan, tekan lama untuk trek seterusnya.
- Volume - / Previous Track Button: Tekan pendek untuk kelantangan turun, tekan lama untuk trek sebelumnya.
- TX/RX Mode Switch: Toggles between Transmitter and Receiver modes.
- Port Pengecasan (USB-C): Untuk mengecas peranti.
4. Persediaan dan Berpasangan
4.1 Mengecas Peranti
Before initial use, fully charge the device. Connect the provided USB-C charging cable to the device's charging port and a USB power source (e.g., computer USB port, USB wall adapter). The LED indicator will show charging status and turn off when fully charged.
4.2 Receiver Mode (RX) Setup
In RX mode, the device receives Bluetooth audio from your phone/tablet and outputs it to a non-Bluetooth audio system (e.g., car stereo, home stereo, wired headphones).
- Switch the mode selector to RX.
- Connect the BT021 to your audio system's 3.5mm AUX input using the provided audio cable or connector.
- Power on the BT021 by pressing and holding the MFB for 3 seconds until the LED flashes blue and red, indicating pairing mode.
- On your mobile device (smartphone, tablet), enable Bluetooth and search for "SF-BT021" in the list of available devices.
- Select "SF-BT021" to pair. The LED will turn solid blue once connected.
- Play audio on your mobile device, and it will stream wirelessly to your connected audio system.

Image 4: Visual guide for connecting the SOOMFON BT021 in Receiver (RX) mode. It shows switching to RX, connecting to a car stereo, enabling Bluetooth on a phone, and pairing with "SF-BT021".
4.3 Transmitter Mode (TX) Setup
In TX mode, the device transmits audio from a non-Bluetooth source (e.g., TV, computer, MP3 player) to Bluetooth headphones or speakers.
- Switch the mode selector to TX.
- Connect the BT021 to your audio source's 3.5mm audio output (e.g., TV headphone jack) using the provided audio cable.
- Power on the BT021 by pressing and holding the MFB for 3 seconds until the LED flashes blue and red, indicating pairing mode.
- Letakkan fon kepala atau pembesar suara Bluetooth anda ke mod berpasangan.
- The BT021 will automatically search for and connect to nearby Bluetooth audio devices. The LED will turn solid blue once connected.
- Play audio from your source device, and it will stream wirelessly to your Bluetooth headphones/speaker.

Image 5: Visual guide for connecting the SOOMFON BT021 in Transmitter (TX) mode. It shows switching to TX, connecting to a TV's AUX port, putting Bluetooth headphones in pairing mode, and automatic pairing.
5. Arahan Operasi
5.1 Hidupkan/Mati Kuasa
- Hidupkan kuasa: Press and hold the MFB for approximately 3 seconds until the LED indicator lights up.
- Matikan: Press and hold the MFB for approximately 3 seconds until the LED indicator turns off.
5.2 Music Playback Control (RX Mode)
- Main/Jeda: Tekan pendek MFB.
- Kelantangan: Short press the "Volume +" button.
- Perlahankan suara: Short press the "Volume -" button.
- Lagu Seterusnya: Long press the "Volume +" button.
- Trek Sebelumnya: Long press the "Volume -" button.
5.3 Call Management (RX Mode)
- Jawab/Tamatkan Panggilan: Tekan pendek MFB.
- Tolak Panggilan: Tekan lama MFB selama 2 saat.
- Dail Semula Nombor Terakhir: Tekan dua kali pada MFB.

Image 6: The SOOMFON BT021 being used in a car for hands-free calling. This demonstrates the device's microphone and CVC 8.0 noise cancellation features for clear communication while driving.
6. Penyelenggaraan dan Penjagaan
- Pastikan peranti kering. Kelembapan boleh merosakkan litar dalaman.
- Jangan dedahkan peranti kepada suhu yang melampau.
- Elakkan daripada menjatuhkan atau meletakkan peranti kepada kesan yang kuat.
- Bersihkan peranti dengan kain lembut dan kering. Jangan gunakan bahan kimia atau detergen yang keras.
- Simpan peranti di tempat yang sejuk dan kering apabila tidak digunakan untuk tempoh yang lama.
7. Penyelesaian masalah
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Peranti tidak dihidupkan. | Bateri lemah. | Cas peranti sepenuhnya menggunakan kabel USB-C yang disediakan. |
| Tidak boleh berpasangan dengan peranti. |
|
|
| Tiada audio atau kualiti audio yang lemah. |
|
|
| Call quality is poor (RX mode). |
|
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8. Spesifikasi
| Nama Model | BT021 |
| Versi Bluetooth | 5.3 |
| Bluetooth Profiles | A2DP, AVRCP, HFP, HSP |
| Codec Audio | SBC, AAC |
| Julat Operasi | Sehingga 10 meter (33 kaki) |
| Kapasiti Bateri | 250 mAh Litium-ion |
| Masa Mengecas | Lebih kurang 1.5 jam |
| Masa Bekerja (Mod RX) | Sehingga 8 jam |
| Masa Kerja (Mod TX) | Sehingga 6.5 jam |
| Input/Output | 3.5mm Audio Jack |
| Port Pengecasan | USB-C |
| Ciri Khas | CVC 8.0 Noise Cancellation, Built-in Microphone, Low Latency |
9. Waranti dan Sokongan
SOOMFON products come with a standard manufacturer's warranty. For specific warranty details, please refer to the warranty card included in your package or visit the official SOOMFON webtapak.
If you encounter any issues or have questions regarding your SOOMFON BT021, please contact our customer support team. Our team is available to assist you within 24 hours.
Hubungan Sokongan Pelanggan: Please refer to the contact information provided on the product packaging or the official SOOMFON webtapak.





