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- Built for Construction Sites
- Waterproof, Dustproof & Extreme Weather Ready with NOAA Alerts
- Seen Instantly in Smoke, Fog or Collapse Emergencies
- 4-Day Standby & USB-C Charging
- Glove-Friendly & Rugged Shoulder Mic
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Description
Spec
| Mode | Analog |
| Frequence Band | FRS |
| Transmit Frequency（TX） | UHF: 462-467MHz |
| Receive Frequency(RX) | UHF: 462-467MHz |
| Power | 2W/0.5W |
| Channel Number | 22 |
| Channel display | Channel Number |
| Waterproof Rating | IP67 |
| Bluetooth | / |
| Location | / |
| Battery Capacity | 2000mAh |
| Operation Temperature | -20℃ to +60℃ |
| Encryption Type | CTSCC/DCS |
| Display | LCD |
| Wireless Copy | / |
| NOAA | Y |
| Emergency Alarm | Local+Remote |
| Lone work | / |
| Man Down | / |
| Weight | 202g |
| Size | 180*60*33mm |
| Type-C Charging | Y |
| Additional Features | 1. Busy lock; 2. VOX; 3.TOT; 4.End-of-call tone; 5.Pressure amplification function ; 6; Power level display 7. Scan; 8.Keypad lock; 9.Voice annunciation; 10.Power saving; 11.Low battery reminder; |
| Model number | RB48 radio |
| Frequency Range | FRS |
| Channel Capacity | 22 |
| Channel step value | 12.5KHz |
| Operation Voltage | 3.7V |
| Battery Capacity | 2000mAh(Li-ion) |
| Operating Temperature | -20℃+60℃ |
| Antenna Impedance | 50Ω |
| RF Power | High:2W/Low:0.5W |
| Frequency Stability | ±2.5ppm |
| Voice Output Power | ≥300mW |
| Audio Distortion | ≤3% |
| Transmitting Current | ≤1500mA |
| Receiving Current | ≤410mA |
| Working Time | 12 hours |
| Standby Time | 48 hours |
| Dimensions | 180*60*33mm(with antenna) |
Features
- IP67 waterproof
- LCD display
- Busy lock
- VOX
- High and low power
- End-of-call tone
- Pressure amplification function
- Power level display
- Scan function
- Keypad lock
- Voice annunciation
- Power saving function
- Low battery reminder
- TOT
- NOAA(US)
FAQ
No. The RB48 operates on the FRS (Family Radio Service) platform, which is license-free in the United States. Charge the radios, set the same channel, and your crew is talking. Teams outside the US should check local rules; Retevis also offers PMR446 versions such as the RB648 for Europe.
The radio body is IP67: dust-tight and submersible to 1 m for 30 minutes. The speaker mic is IP55: protected against dust and low-pressure water jets such as rain and splash, but it is not made for submersion. Practical rule: let the radio take the dunk risk, and clip the mic where it faces spray, not standing water.
Yes. RB48 units are preset to the same FRS channels and CTCSS/DCS codes, so new radios from any pack size communicate with existing RB48 and RT48 stock out of the box. Keep channel and code settings matched across the fleet.
Official FRS range is up to 2.3 km (about 1.4 miles), and the PMR figure is 2 km. Real-world range depends on terrain and buildings: open ground gets the most, multi-floor concrete gets less. For large campuses, add repeater-capable models to the mix or schedule a range test with your sales contact.
Six options: 2, 4, 10, 12, 20, and 50 radios. Every pack pairs the same IP67 FRS radio with an IP55 speaker mic per radio, so a 2-pack works as a trial set and a 50-pack equips a full site. This page defaults to the 20-pack; see the bundle table above for details.
Yes. Alongside the 50-pack configuration, Retevis supports wholesale quotes for volume orders, and non-profit organizations regularly purchase RB48 bundles for community and rescue work. Send your quantity, scenario, and shipping address to sales for a formal quotation.
Yes. RB48 radios accept Retevis 2.5 mm 1-pin accessories such as the EES004 earpiece and EAS001 acoustic tube earpiece, so security and event teams can switch between shoulder speaker mics and discreet earpieces on the same radio.
The 2000mAh battery supports up to 12 hours of continuous use, which covers a standard construction or event shift. Crews running 24-hour operations typically rotate chargers at shift change and keep a few Type-C cables in vehicles as backup.
Each radio charges by Type-C directly, and dual-seat chargers stage overnight rotation. Car adapters, computers, and power banks all work through USB. Larger fleets rotate two chargers per shift; multi-unit charging stations can be quoted for bigger deployments.
The TPE shell and reinforced belt clip are built for 2 m drops, abrasion, and shock, and the radio is IP67 sealed against dust and water. Jobsites that report radios dropped from ladders and run over by equipment are exactly the environment the RB48 is specified for; for the toughest treatment, RB48A and RB48 Pro add AI noise reduction and higher power.
Yes. Eleven NOAA weather channels broadcast forecasts and severe-weather alerts to every radio. Farm, marina, and outdoor event crews rely on this to clear fields or stages before storms arrive, with no phone coverage needed.
Construction sites, security and church safety teams, agricultural training groups, event production staff, mining and railroad maintenance crews, and non-profit rescue organizations: any team that needs dependable license-free communication and can size its order from a 2-pack trial to a 50-pack fleet.
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DELIVERY
- Dispatch: Within 24 Hours
- Free shipping across all products on a minimum purchase of $50.
- International delivery time - 7-10 business days
- Cash on delivery might be available
- Easy 30 days returns and exchanges
RETURNS
If you do not like the product you can return it within 15 days - no questions asked. This excludes bodysuits, swimwear and clearance sale items. We have an easy and hassle free return policy. Please look at our Delivery & Returns section for further information.
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