1. Pengenalan
The Retevis RB48 Pro is a high-power, heavy-duty two-way radio designed for reliable communication in demanding environments. Featuring IP67 waterproofing, advanced AI noise reduction, and an extended battery life, it is suitable for construction sites, outdoor activities, and other professional uses.

Image: Retevis RB48 Pro Two-Way Radio, front view.
2. Kandungan Pakej
Pastikan semua item ada dalam pakej anda:
- RB48 Pro walkie talkie (x4)
- EEM003 earpiece (x4)
- Manual pengguna (x4)
- Penyesuai (x4)
- Base charger (x4)
- Anti-loss lanyard (x4)
- Data cable (x1)

Image: All components included in the Retevis RB48 Pro 4-pack.
3. Ciri-ciri Utama
3.1. Long Range Coverage
The RB48 Pro extends communication up to 700,000 sq ft and 50 floors, making it reliable for large construction sites and multi-story buildings.

Image: Visual representation of the RB48 Pro's enhanced communication range.
3.2. Hayat Bateri Sepanjang Hari
Equipped with a 2800mAh high-capacity battery, the radio delivers up to 18 hours of continuous use and 5 days of standby time, ensuring connectivity through long shifts.

Image: The RB48 Pro highlighting its 2800mAh battery and extended usage times.
3.3. Pengurangan Bunyi AI
Advanced 3-layer AI technology cancels out machinery, wind, and background noise, ensuring clear communication in noisy job sites.

Image: Diagram illustrating how noise reduction provides clear communication in noisy environments.
Video: Demonstration of the RB48 Pro's noise reduction capabilities in a noisy environment.
Video: Noise cancellation test of the RB48 Pro, showing its effectiveness in windy conditions.
3.4. IP67 Kalis Air dan Habuk
The RB48 Pro features an IP67 3-proof design, built to withstand tough conditions including submersion in water up to 1 meter deep for 30 minutes, and resistance to 0.1µm dust particles. It is also drop-resistant up to 2 meters.

Image: The RB48 Pro highlighting its IP67 3-proof design for water, dust, and drop resistance.
Video: Waterproof test of the RB48 Pro, demonstrating its ability to function after exposure to water.
3.5. One-Touch Group Call
Simple push-to-talk (PTT) function allows crews to connect instantly, improving team efficiency.
3.6. Anti-Loss Lanyard
Includes an anti-loss lanyard to keep the radio securely by your side, preventing drops and loss.

Image: The RB48 Pro shown with a concealed air acoustic earphone and anti-loss lanyard.
3.7. Penggera Kecemasan
Features a 1-second alarm activation for rapid emergency response on job sites.

Image: The RB48 Pro displaying its emergency alarm function.
4. Produk Lebihview (Komponen)
The RB48 Pro features a T-shape design for an ergonomic and firm hold. Key components include:
- Antena: Untuk menghantar dan menerima isyarat.
- Tombol Kuasa/Kelantangan: Untuk menghidupkan/mematikan radio dan melaraskan kelantangan.
- paparan: Menunjukkan saluran, status bateri dan penunjuk lain.
- Butang PTT (Push-to-Talk): Tekan untuk menghantar, lepaskan untuk menerima.
- Butang panggilan: Initiates a call.
- Butang Menu: Mengakses tetapan radio.
- Butang Monitor/Imbas: Activates monitor or scan functions.
- Kekunci Sampingan: Programmable for various functions like alarm or NOAA.
- Port USB-C: Untuk mengecas.
- Bicu Alat dengar 2.5mm: For connecting earpieces.
- Klip Pusing 360°: For secure attachment.

Image: Diagram detailing the shape, accessories, buttons, channels, rated voltage, dimension, and weight of the RB48 Pro.
5. Persediaan
5.1. Mengecas Radio
The RB48 Pro supports dual charging modes: directly via the USB-C port or using the included base charger. Ensure the radio is fully charged before first use.

Image: The RB48 Pro placed in its charging base.
5.2. Memasang Aksesori
Attach the anti-loss lanyard to the designated loop on the radio. The 360° rotating clip can be used to secure the radio to clothing or a belt.
5.3. Initial Frequency Sync
Wireless frequency sync can be achieved in 15 seconds for fast multi-radio setup.
6. Arahan Operasi
6.1. Hidupkan/Mati Kuasa dan Pelarasan Kelantangan
Rotate the power/volume knob clockwise to turn the radio on and increase volume. Rotate counter-clockwise to decrease volume and turn off.
6.2. Pemilihan Saluran
The RB48 Pro has 16 pre-set channels. Use the channel selector knob to choose your desired channel.
6.3. Push-to-Talk (PTT)
Press and hold the PTT button to transmit your voice. Release the PTT button to listen for incoming transmissions.
6.4. Group Call
Utilize the one-touch group call function for instant communication with your team on a designated group channel.
Video: A guide on how to use the RB48 Pro walkie-talkie, covering basic operations and features.
6.5. Saluran Cuaca NOAA
Stay informed and safe with 11 NOAA channels providing real-time weather alerts and emergency information.

Image: The RB48 Pro display showing NOAA weather channel information.
7. Penyelenggaraan
7.1. Pembersihan
Lap radio dengan lembut, damp cloth. Do not use harsh chemicals or abrasive cleaners. Ensure all port covers are securely closed before cleaning with water.
7.2. Penjagaan Bateri
To prolong battery life, avoid fully discharging the battery frequently. Charge the radio regularly, especially if it will be stored for an extended period.
8. Penyelesaian masalah
8.1. Tiada Kuasa
- Periksa sama ada bateri telah dicas.
- Pastikan tombol kuasa/kelantangan dihidupkan.
8.2. Tidak Boleh Menghantar atau Menerima
- Verify that the radio is on the correct channel.
- Pastikan butang PTT ditekan sepenuhnya semasa menghantar.
- Check for obstacles that might be blocking the signal.
- Confirm that the radio is within range of other units.
8.3. Kualiti Audio Tidak Baik
- Laraskan kelantangan.
- Pastikan mikrofon dan pembesar suara tidak terhalang.
- Check if AI noise reduction is enabled in very noisy environments.
9. Spesifikasi
| Ciri | Perincian |
|---|---|
| Nombor Model | RB48 Pro |
| Berat Barang | 6.64 pounds (total for 4-pack) / 3010 Grams |
| Dimensi Produk | 1.5"D x 2.28"L x 5.9"T (setiap radio) |
| Bateri | 4 Bateri Bukan Standard diperlukan (termasuk) |
| warna | kuning |
| Bilangan Saluran | 16 |
| Ciri Khas | 2800mAh Battery, AI noise reduction, Group Call, Longer Range, Anti-loss lanyard, Triple protection-IP67 |
| Voltage | 7.4 Volt |
| Tahap Ketahanan Air | Kalis air (IP67) |
10. Waranti dan Sokongan
10.1. Maklumat Waranti
We provide a 5-year warranty for the radio body and a 1-year warranty for accessories. We also offer a 30-day no-reason return policy.
10.2. Post-Warranty Service
Beyond the warranty period, we continue to offer maintenance services. Buyers are responsible for corresponding costs. For service, please contact us on Amazon; we will reply within 12 hours.





