Zavedení
Děkuji za nákupasing the Docooler GT77 BT5.4 2-in-1 Wireless Audio Adapter. This device functions as both a Bluetooth transmitter and receiver, allowing you to wirelessly stream audio to and from various devices. It features BT5.4 technology, NFC quick pairing, TF card playback, and RGB ambiance lighting. Please read this manual carefully before use to ensure proper operation and to maximize your experience with the product.
Konec produktuview
The Docooler GT77 is a versatile audio adapter designed to enhance your audio connectivity. It can upgrade non-Bluetooth devices to be Bluetooth-compatible, offering seamless audio streaming. The device supports multiple audio input/output options including 3.5mm AUX and RCA.

Image: The Docooler GT77 adapter connected to a speaker and a smartphone, illustrating its use for upgrading wired speakers to wireless.
Klíčové vlastnosti:
- Funkce 2 v 1: Easily switch between Bluetooth Transmitter (TX) and Receiver (RX) modes.
- Bluetooth 5.4: Provides stable and high-quality audio transmission with a range of up to 10 meters.
- Rychlé párování NFC: Simplifies connection with NFC-enabled devices.
- Přehrávání TF karty: Supports direct music playback from a TF card (up to 64GB).
- Více zvukových rozhraní: Includes 3.5mm AUX and RCA ports for broad compatibility.
- RGB Ambiance Lighting: Customizable lighting to enhance your listening environment.

Image: The Docooler GT77 adapter shown with its various cables, including 3.5mm AUX and RCA, highlighting its rich interface compatibility.
Nastavení
Obsah balení:
- 1 x Docooler GT77 BT Audio Adapter
- 1 x 3.5 mm audio kabel
- 1 x RCA kabel
- 1 x napájecí kabel typu C
- 1 x Uživatelská příručka
Zapnutí zařízení:
- Connect the provided Type-C power cable to the adapter's USB C port.
- Plug the other end of the Type-C power cable into a 5V USB power source (e.g., USB wall adapter, computer USB port).
- The device will power on automatically, indicated by the RGB lighting.
Návod k obsluze
Mode Switching (Transmitter/Receiver):
The Docooler GT77 features a single button to switch between Transmitter (TX) and Receiver (RX) modes.
- Stiskněte tlačítko M/☀ button briefly to toggle between TX and RX modes.
- The device's indicator light will change to reflect the current mode.

Image: A diagram illustrating the receive (RX) and launch (TX) modes, showing how the adapter connects to various devices like phones, tablets, TVs, speakers, and headphones.
Režim přijímače (RX):
In RX mode, the adapter receives Bluetooth audio from your smartphone, tablet, or other Bluetooth-enabled device and outputs it to a wired speaker, amplifier, or car stereo system.
- Ensure the adapter is in RX mode.
- Connect the adapter's AUX OUT or RCA OUT port to your non-Bluetooth audio device (e.g., speaker, amplifier) using the appropriate cable.
- On your smartphone or tablet, enable Bluetooth and search for "GT77" in the list of available devices.
- Select "GT77" to pair. Once paired, audio from your device will stream wirelessly to your connected speaker.

Image: The Docooler GT77 adapter in Receiver (RX) mode, connected to a traditional speaker, receiving audio wirelessly from a smartphone.
Režim vysílače (TX):
In TX mode, the adapter transmits audio from a non-Bluetooth device (like a TV or PC) to Bluetooth headphones or speakers.
- Ensure the adapter is in TX mode.
- Connect your audio source (e.g., TV, desktop computer, projector) to the adapter's AUX IN or RCA IN port using the appropriate cable.
- Přepněte sluchátka nebo reproduktor Bluetooth do režimu párování.
- The adapter will automatically search for and connect to nearby Bluetooth audio devices. Once connected, audio from your source will be transmitted wirelessly.

Image: The Docooler GT77 adapter in Transmitter (TX) mode, connected to a television, sending audio wirelessly to a user's headphones for private listening.
Rychlé párování NFC:
For NFC-enabled devices, pairing is even faster.
- Ujistěte se, že máte na svém smartphonu nebo tabletu povoleno NFC.
- Hold your NFC-enabled device close to the NFC area on the Docooler GT77 adapter.
- Potvrďte požadavek na párování na vašem zařízení.
Note: NFC pairing is primarily for Receiver (RX) mode.

Image: A smartphone displaying an NFC connection prompt, positioned near the Docooler GT77 adapter, demonstrating the NFC quick pairing feature.
Přehrávání TF karty:
The adapter supports direct music playback from a TF (MicroSD) card.
- Insert a TF card (up to 64GB, not included) loaded with MP3, FLAC, WMA, MAV, or APE audio files into the TF card slot on the adapter.
- Dlouze stiskněte M/☀ button to switch between wireless and TF card playback modes.
- Use the previous/next track buttons on the adapter to navigate your music.

Image: The Docooler GT77 adapter with a TF card being inserted into its dedicated slot, highlighting the TF card playback functionality.
RGB Ambiance Lighting:
The adapter features RGB lighting that can be adjusted to suit your preference. Refer to the device's controls for specific RGB adjustment options (e.g., short press M/☀ button for color cycle, long press for off/on).
Údržba
- Udržujte zařízení suché. Vlhkost může poškodit vnitřní obvody.
- Nevystavujte zařízení extrémním teplotám.
- Zařízení čistěte měkkým, suchým hadříkem. Nepoužívejte agresivní chemikálie ani čisticí prostředky.
- Zabraňte pádu zařízení nebo jeho vystavení silným nárazům.
Odstraňování problémů
Bez napájení:
- Ensure the Type-C power cable is securely connected to both the adapter and a working 5V power source.
- Zkuste jiný USB napájecí adaptér nebo USB port.
Nelze spárovat/připojit:
- Make sure the adapter is in the correct mode (RX for receiving, TX for transmitting).
- Ensure your Bluetooth device (for RX mode) or Bluetooth headphones/speaker (for TX mode) is in pairing mode.
- Move the devices closer to each other (within 10 meters).
- Vymažte historii párování Bluetooth v zařízení a zkuste spárování zopakovat.
- If using NFC, ensure NFC is enabled on your phone and you are tapping the correct area.
Žádný zvuk:
- Check all audio cable connections (3.5mm AUX, RCA) are secure and correctly plugged into the input/output ports.
- Ujistěte se, že je hlasitost na adaptéru i na připojeném zvukovém zařízení nastavena na vysokou úroveň.
- Verify that the adapter is successfully paired and connected to the audio source/receiver.
- If using TF card, ensure the card is inserted correctly and the adapter is in TF card playback mode.
Špatná kvalita zvuku/rušení:
- Zmenšete vzdálenost mezi adaptérem a připojeným zařízením Bluetooth.
- Avoid physical obstructions (walls, large objects) between the devices.
- Přesuňte se dál od jiných bezdrátových zařízení, která by mohla způsobovat rušení (např. Wi-Fi routery, mikrovlnné trouby).

Image: A visual representation of the Docooler GT77's 10-meter transmission range, showing stable signal coverage within a typical home environment.
Specifikace
| Číslo modelu | ZRV0656844287655XH |
| Verze Bluetooth | V5.4 |
| Bluetooth protokoly | A2DP, AVRCP |
| Provozní vzdálenost | Až 10 metrů (otevřená plocha) |
| Podpora NFC | Ano |
| Frekvenční odezva | 10 Hz - 20 kHz |
| Odstup signálu od šumu | > 90 dB |
| Podpora TF karet | Max 64 GB (není součástí dodávky) |
| TF Card Formats | MP3, FLAC, WMA, MAV, APE |
| Audio kodeky | SBC |
| Nabíjecí port | USB Type-C |
| Vstupní objemtage/Aktuální | DC 5V 500mA |
| Barva | Černý |
| Dimensions (ϕ x H) | 7.3 cm x 2.2 cm (2.87 palce x 0.86 palce) |
| Hmotnost | 44 g |

Obrázek: Pohled shora dolů view of the Docooler GT77 adapter, showing its compact dimensions of 7.3 cm diameter and 2.2 cm height.
Záruka a podpora
Informace o záruce a technickou podporu naleznete v dokumentaci dodané s vaším nákupem nebo se obraťte na svého prodejce. Uschovejte si doklad o koupi pro případné reklamace.



