Retevis RB21 4G LTE Network Radio User Manual

1. Johdanto

1.1 Tuote ohiview

The Retevis RB21 is a versatile 4G LTE network radio designed for extensive communication. It combines the functionality of a walkie-talkie with essential smartphone features, offering unlimited communication range across 2G/3G/4G networks. This device is suitable for various professional and outdoor activities, ensuring reliable connectivity.

1.2 Tärkeimmät ominaisuudet

• Rajoittamaton kantamaviestintä: Utilizes 2G/3G/4G networks for nationwide coverage.
• SIM-kortin tuki: Compatible with major network operators (Vodafone, T-Mobile, Telefonica, O2, e-Plus).
• Wi-Fi- ja Bluetooth-yhteydet: Allows communication via Wi-Fi without a SIM card, and supports Bluetooth accessories.
• GPS-paikannus: Integrated GPS function for location tracking and navigation.
• Zello Application Support: Facilitates communication with companions using Zello and similar PTT applications.
• Muisti ja tallennus: Varustettu 1 Gt RAM-muistilla ja 8 Gt sisäisellä tallennustilalla.
• Näyttö: Features a 2.4-inch touchscreen for easy navigation.
• Kestävyys: IP54 water and dust resistance for robust performance in various environments.
• Pitkäkestoinen akku: Powered by a 2800mAh rechargeable Li-ion battery with USB charging.

This image highlights the comprehensive features of the Retevis RB21, such as its ability for nationwide calls, GPS tracking, multi-network support (2G/3G/4G), wireless connectivity (Bluetooth, Wi-Fi), ample memory (1GB RAM + 8GB storage), Zello application compatibility, a powerful 2800mAh battery, a clear 2.4-inch screen, and IP54 water resistance.

2. Pakkauksen sisältö

Valitse seuraavat kohdat rastittamalla ruutu:

• Retevis RB21 Network Radio Unit
• Ladattava litiumioniakku (2800 mAh)
• USB-latauskaapeli
• Virtalähde (jos mukana)
• Vyöklipsi
• Käyttöopas

This image provides a detailed look at the Retevis RB21 device from various angles, illustrating its physical components including the screen, keypad, side buttons, charging port, and the detachable belt clip, which are typically included in the package.

3. Asennusopas

3.1 SIM-kortin ja akun asentaminen

1. Irrota takakansi: Gently pry open the back cover of the device.
2. Aseta SIM-kortti: Locate the SIM card slot. Insert your single SIM card into the designated slot with the gold contacts facing down, ensuring it is properly seated.
3. Aseta akku: Place the 2800mAh Li-ion battery into the battery compartment, aligning the contacts.
4. Vaihda takakansi: Kiinnitä takakansi tukevasti, kunnes se napsahtaa paikalleen.

3.2 Laitteen lataaminen

1. Liitä USB-latauskaapeli laitteen latausporttiin.
2. Connect the other end of the USB cable to a power adapter or a computer's USB port.
3. Latauksen merkkivalo syttyy. Anna laitteen latautua täyteen ennen ensimmäistä käyttökertaa.

This image shows the Retevis RB21 powered on, displaying its user interface. This is relevant for the setup section as it indicates the device is ready for initial configuration after battery and SIM installation.

4. Käyttöohjeet

4.1 Virta päälle/pois

To power on the device, press and hold the Power button until the screen illuminates. To power off, press and hold the Power button, then select 'Power Off' from the options.

4.2 Perusviestintä (PTT)

The Retevis RB21 functions as a Push-To-Talk (PTT) device. Once configured with a network or Wi-Fi connection and a compatible application like Zello:

1. Select your desired contact or group from the main menu.
2. Press and hold the dedicated PTT button on the side of the device to transmit your voice.
3. Release the PTT button to listen for incoming messages.

4.3 Using Zello and GPS Features

The device supports the Zello application for instant communication. The integrated GPS function allows for location tracking and sharing, which can be utilized within compatible applications for enhanced coordination.

This image demonstrates the Retevis RB21's utility for communication in mobile environments, such as logistics or transportation, highlighting its GPS and 4G capabilities for maintaining contact with teams anytime, anywhere.

5. Huolto

5.1 Puhdistus

Regularly clean the device with a soft, dry cloth. Avoid using harsh chemicals or abrasive cleaners. For stubborn dirt, a slightly damp cloth can be used, ensuring no moisture enters ports or openings.

5.2 Veden- ja pölynkestävyys

The Retevis RB21 has an IP54 rating, meaning it is protected against dust ingress and splashing water from any direction. While it offers good protection, it is not fully waterproof. Avoid submerging the device in water or exposing it to heavy rain.

This image visually represents the IP54 rating of the Retevis RB21, showing its resilience against dust and water splashes, which is important for understanding its maintenance and usage in challenging environments.

6. Vianmääritys

6.1 Yleiset ongelmat ja ratkaisut

Laite ei käynnisty:

Ensure the battery is correctly installed and fully charged. Connect the device to a charger to confirm if it's a battery issue.

Ei verkkosignaalia:

Check if the SIM card is properly inserted and activated. Verify that you are within a 2G/3G/4G network coverage area. If using Wi-Fi, ensure the Wi-Fi network is active and you have the correct password.

Cannot transmit or receive messages:

Confirm that your device is connected to the internet (via SIM data or Wi-Fi). Ensure the Zello or other PTT application is running and you are logged in. Check your selected contact or group for communication.

GPS ei toimi:

Ensure GPS is enabled in the device settings. Move to an open area with a clear view taivaalta paremman satelliittivastaanoton saavuttamiseksi.

7. Tekniset tiedot

8. Takuu ja tuki

8.1 Takuutiedot

Retevis offers a 2-year warranty for the radio body and a 1-year warranty for accessories. Additionally, a 30-day no-reason return policy is provided. Beyond the warranty period, maintenance services are available, with buyers responsible for associated costs.

8.2 Asiakastuki

For any inquiries or support needs, please contact Retevis customer service via Amazon. Responses are typically provided within 12 hours.