Retevis RT81 Digital Walkie Talkie with Microphone Kit is designed for larger teams to increase productivity.The microphone makes it easier to carry the walkie-talkie and allows for better communication and work. Digital radios have the advantage of being more visible in the local area and are the basic choice for digital communication.

Compared with analog walkie-talkies, digital walkie-talkies have more stable signals, clearer sound quality, larger battery capacity, longer These advantages can better help the realization and completion of work.
Retevis RT81 is a commercial digital walkie-talkie based on the Retevis DMR long range walkie-talkie.
It is aimed at teams and people who need better sound quality and distance performance after using a long range walkie-talkie.
Retevis RT81 digital band provides clearer sound quality than ordinary analog channels; no need to worry about unclear calls even in noisy environments.
Group call setup allows for better communication and coordination to improve the efficiency of different departments.
Waterproof two-way radios are IP67 rated and can be used even in rainy weather; 1 meter drop test; RT81 radios will still work; ruggedized case and sturdy accessories will last a long time and save your business money!
2200mAh battery; retevis two-way radios support approximately 12 hours of battery life on a full charge; meets the needs of standard shifts
Factory preset channel frequencies, just switch to the same channel and you're ready to go; simple side buttons make it easy for every operator to operate

Secure communications are an essential requirement, especially for public safety applications, RT81 is equipped with 10-bit key data encryption, which can be used to encrypt data in a variety of ways. walkie talkie prevents eavesdropping and avoids interference to ensure secure communication.
The Retevis RT81 paired with the H103K Shoulder Speaker Mic provides enhanced communication efficiency and convenience. The Kenwood 2-pin plug ensures seamless compatibility with the RT81, while the 360° rotatable metal clip allows easy attachment to your collar, keeping your hands free for other tasks. This combination of the RT81 and speaker mic ensures clear, hands-free communication, ideal for long-distance business use and dynamic work environments.
For churches; schools; workplaces; construction sites; beach clubs; hotels; marinas; manufacturing plants; and security companies, etc.

Retevis RT81 Digital Walkie Talkie with Microphone Kit is designed for larger teams to increase productivity.The microphone makes it easier to carry the walkie-talkie and allows for better communication and work. Digital radios have the advantage of being more visible in the local area and are the basic choice for digital communication.

Compared with analog walkie-talkies, digital walkie-talkies have more stable signals, clearer sound quality, larger battery capacity, longer These advantages can better help the realization and completion of work.
Retevis RT81 is a commercial digital walkie-talkie based on the Retevis DMR long range walkie-talkie.
It is aimed at teams and people who need better sound quality and distance performance after using a long range walkie-talkie.
Retevis RT81 digital band provides clearer sound quality than ordinary analog channels; no need to worry about unclear calls even in noisy environments.
Group call setup allows for better communication and coordination to improve the efficiency of different departments.
Waterproof two-way radios are IP67 rated and can be used even in rainy weather; 1 meter drop test; RT81 radios will still work; ruggedized case and sturdy accessories will last a long time and save your business money!
2200mAh battery; retevis two-way radios support approximately 12 hours of battery life on a full charge; meets the needs of standard shifts
Factory preset channel frequencies, just switch to the same channel and you're ready to go; simple side buttons make it easy for every operator to operate

Secure communications are an essential requirement, especially for public safety applications, RT81 is equipped with 10-bit key data encryption, which can be used to encrypt data in a variety of ways. walkie talkie prevents eavesdropping and avoids interference to ensure secure communication.
The Retevis RT81 paired with the H103K Shoulder Speaker Mic provides enhanced communication efficiency and convenience. The Kenwood 2-pin plug ensures seamless compatibility with the RT81, while the 360° rotatable metal clip allows easy attachment to your collar, keeping your hands free for other tasks. This combination of the RT81 and speaker mic ensures clear, hands-free communication, ideal for long-distance business use and dynamic work environments.
For churches; schools; workplaces; construction sites; beach clubs; hotels; marinas; manufacturing plants; and security companies, etc.

| Model | Retevis RT81 |
| Frequency | UHF 400-470MHz |
| Mode | Digital/Analog |
| Power | 10W |
| Channel capacity | 32(2 Zone, 16 channel per zone) |
| Zone | 2 |
| Working voltage | 7.4V |
| Working temperature | -30℃~+60℃ |
| Storage temperature | -40℃~+60℃ |
| Continuous working time | Analog:15 hours,Digital:25 hours |
| Battery capacity | 2200mAh |
| Weight(include battery) | 9.32oz/264g |
| Radio size(include battery) | 5.48x2.51x1.45in(139x64x37mm) |
| Receiver | |
| Channel spacing | 12.5/25KHz(Digital mode 12.5KHz) |
| Frequency stability | ±1.0ppm |
| Analog sensibility | 0.35µV/-116dBm(20dB SINAD) |
| 0.2µV/-120dBm(Typical) | |
| Digital sensibility | 0.3µV/-117.4dBm(BER5%) |
| 0.7µV/-110dBm(BER1% | |
| Spurious response | TIA03C:65dB |
| ETSI:65dB | |
| Adjacent channel selectivity | TIA603C:60dB@12.5KHz |
| ETSI:60dB@12.5KHz | |
| Spurious response suppression | TIA603C:70dB ETSI:70dB |
| Receiving spurious emissions | <-57dBm@1GHZ,>-47dBm |
| Blocking | 84dB |
| Rated audio power | 1W |
| Audio response | +1dB—-3dB |
| Rated audio distortion | ≤3% |
| Transmitter | |
| Channel spacing | 12.5/25KHz(Digital mode 12.5KHz) |
| Frequency stability | ±1.5ppm |
| TX power | Low:1W High:10W |
| FM noise | -40dB@12.5kHz |
| Spurious emission | <-36dBm@1GHz,>-30dBm |
| Adjacent channel selectivity | -60dB@12.5KHz |
| FM modulation mode | 12.5KHz:11FOF3E |
| 4FSK digital modulation mode | 12.5KHz(data only)7K60FX |
| 12.5KHz(data+voice)7K60FX | |
| Modulation limit | 2.5KHz@12.5KHz |
| Audio response | +1dB—-3dB |
| Rated audio distortion | ≤3% |
| Digital protocol | ETSITSI02361,-1,-3 |
| Vocoder type | AMBE+2TM |
Note: Specifications will be revised without notice due to technical improvement.
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