#full-duplex wireless Audio module

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SA628F39 Full-Duplex Audio Transmission Module Mesh Network, Concurrent reception

SA628F39 is an 8W high-power, full-duplex wireless data and Audio module. Users can read and configure the module's internal parameters through a USB serial interface, along with a user-friendly PC interface, and control its transmission and reception functions. Data transmission and reception can be directly performed through the serial port, enabling full-duplex wireless data communication with mesh functionality.

SA628F39 features multiple safety mechanisms, including reverse polarity protection, overcurrent and overvoltage protection, and anti-freeze protection, ensuring stable operation in various complex environments. Users only need to connect the power supply, speaker, and microphone to easily achieve remote wireless digital voice transmission. The module is simple to operate and quick to deploy.

SA628F39 supports multi-channel concurrent reception and Mesh self-organizing network functionality. It also supports over-the-air (OTA) upgrades or serial upgrades.

SA628F39 module is designed with efficient heat dissipation and a thermally conductive base to ensure stability and reliability during high-power operation.

SA628F39 is manufactured and tested using lead-free processes and complies with RoHS and Reach standards.

For details, please click：https://www.nicerf.com/products/

Or click：https://nicerf.en.alibaba.com/productlist.html...

For consultation, please contact NiceRF (Email: sales@nicerf.com).

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SA628F39 8W High Power Full-Duplex Audio Transmission Module

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Parameter Test Conditions Min. Typ. Max. Unit Operating voltage 3.3 4.2 5.5 V working temperature -30 25 70 ℃ Current consumption Sleep current 10 20 uA RX current @ No audio output 50 55 mA @8Ω.

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SA618F22 is an embedded full duplex transmission module, combining wireless digital and wireless audio. Users can not only wirelessly transmit data through serial ports, but also achieve wireless transmission of voice through I2S or analog audio interfaces.

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SA618F22 is an embedded full duplex transmission module, combining wireless digital and wireless audio.Users can not only wirelessly transmit data through serial ports, but also achieve wireless transmission of voice through I2S or analog audio interfaces.

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New Product: Next Generation Full-Duplex Audio Intercom Module SA618F22-C1

The SA618F22-C1 is an upgraded wireless digital and audio all-in-one full-duplex transmission module from NiceRF, supporting 8-channel concurrent high-quality calls. Users can not only achieve wireless data transmission via the serial port but also transmit voice signals through I2S digital audio or analog audio interfaces. This module is equipped with a high-speed microcontroller, echo cancellation circuit, ESD protection, high-performance RF chip, and amplifier, utilizing wideband spread spectrum technology, ensuring low power consumption, long-distance transmission, and flexible frequency adjustment. Additionally, the SA618F22-C1 is equipped with a hardware watchdog chip to prevent system crashes and features reverse polarity protection, overcurrent protection, and overvoltage protection circuits, ensuring the safety and stable operation of the device in various environments.

Core Features of the SA618F22-C1:

It can pass CE and FCC certifications: The SA6X8 series can obtain CE and FCC certifications, ensuring compliance with international safety and performance standards. This enhances the product's market competitiveness and guarantees its legal and compliant use in various regions.

SA618F22-C1 Module Features

 Frequency Band UHF 420-510MHz(Customizable 150-960 MHz)

Up to 8 devices transmit simultaneously ( Receive unlimited)

Echo cancellation function

VOX function

High integration and compact size

Low power consumption in sleep mode

1-3KM transmission distance in the open area

Supports 2 to 8 people in high-quality simultaneous calls

Shorter call latency

I2S Digital audio+analog audio

 Line In + Mic input

Full-duplex data transmission

 Multi-level wireless repeating

 Support OTA &Serial upgrade

 High reception sensitivity: -117 dBm

Applications

Headset Walkie-talkie

Handheld radio

The newly released SA618F22-C1 has a power output of 160mW, and we will soon launch the SA618F30-C1, a high-power intercom module with a power output of 1W. The SA618F30-C1 will also comply with CE and FCC certifications. All modules developed independently by Siwei Wireless are produced and tested using lead-free processes, meeting RoHS and REACH standards. We welcome inquiries from manufacturers.

For details, please click：https://www.nicerf.com/products/ Or click：https://nicerf.en.alibaba.com/productlist.html?spm=a2700.shop_index.88.4.1fec2b006JKUsd For consultation, please contact NiceRF (Email: sales@nicerf.com).

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SA618F22-C1 Wireless Digital And Audio All-In-One Full-Duplex Transmission Module

SA618F22-C1 is an upgraded wireless digital and audio all-in-one full-duplex transmission module from NiceRF. It features reduced latency and supports high-quality calls for up to 8 people simultaneously. Users can wirelessly transmit data via a serial port and can also send voice signals through I2S digital audio or analog audio interfaces. The module is equipped with a high-speed microcontroller, a high-performance RF chip, and an amplifier, employing wide band spread spectrum technology, which provides low power consumption, long transmission distances, and flexible frequency adjustment. SA618F22-C1 supports multi-channel concurrent reception and multi-level relay transmission. With a highly integrated design, users only need to connect an audio amplifier, microphone, and speaker to easily achieve remote wireless transmission of digital voice. SA618F22-C1 supports full-duplex wireless data transmission with relay functionality via a serial port. It allows for over-the-air upgrades or serial port upgrades. Users can quickly and easily set the internal parameters of the module through the serial port and control its sending and receiving functions. SA618F22-C1 is produced and tested using lead-free processes, complying with RoHS and Reach standards.

For details, please click：https://www.nicerf.com/products/ Or click：https://nicerf.en.alibaba.com/productlist.html?spm=a2700.shop_index.88.4.1fec2b006JKUsd For consultation, please contact NiceRF (Email: sales@nicerf.com).

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New Quality Upgrade, Communication Evolution: Full Duplex Audio Technology from 8K to 16K Sampling Rate

NiceRF surprises with an upgrade to the SA618 series modules, including SA618F22, SA618F30, SA628F22, and SA628F30. The full-duplex audio modules now boast a sampling rate upgrade from the original 8K to the current 16K, utilizing long-distance wireless transmission. To meet the diverse application needs of different customers, we have optimized the audio quality upgrade of this series by offering various selectable modes through module software design, allowing users to customize their modules in multiple ways.

The main upgrade of the SA618 series this time is the audio sampling rate, which has been upgraded from the previous full-duplex 8K sampling rate to full-duplex 16K sampling rate. Using a 16K sampling rate compared to 8K sampling rate can produce audio files with higher fidelity, providing a superior music experience. This upgrade supports OTA over-the-air updates and wireless multi-level relay MESH networking, making it easier for users to configure more flexibly. This upgrade not only brings better audio quality experience technically, but also reflects our philosophy of continuously pursuing product quality.

Full-duplex audio module features:

Frequency Band 420~510MHz

(customizable 150-960 MHz)

Up to 8 devices transmit simultaneously ( Receive unlimited)

Echo cancellation function

VOX function

Multi-level wireless repeating

I2S Digital audio+analog audio

Line In + Mic input

Full duplex data transmission

Support data transmission

Sleep low power consumption

Support OTA &Serial upgrade

1KM transmission distance in the open area

High Receiving sensitivity：-117 dBm

High integration and small size

To better distinguish this upgrade, the SA618 transmission audio quality can be divided into multiple versions for differentiation.

Audio Quality Grade Chart:

Audio Quality Level:L3>L2>L1>L0 In summary, the upgrade from full-duplex audio from 8K sampling rate to full-duplex 16K sampling rate not only enhances the sound quality, frequency response, and anti-interference capability of the audio communication system but also meets different requirements for communication quantity, sound quality, and transmission distance in different scenarios. Whether it's long-distance communication or short-distance communication, as well as situations where multiple people communicate simultaneously, these systems can provide efficient, clear, and reliable audio communication experiences. NiceRF is committed to providing users with more convenient and comfortable communication solutions.

For details, please click：https://www.nicerf.com/products/ Or click：https://nicerf.en.alibaba.com/productlist.html?spm=a2700.shop_index.88.4.1fec2b006JKUsd For consultation, please contact NiceRF (Email: sales@nicerf.com).

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Advancing Fire Intercom Communication: Innovative Applications of Full Duplex Concurrent Reception and Transmission Intercom Modules

LoRa wireless technology, short for Long Range Radio, is a specialized technology designed for long-distance wireless communication. Its core advantage lies in its ability to achieve extended transmission distances under low power conditions, thus achieving a perfect balance between low power consumption and long-distance transmission! Among the numerous products utilizing LoRa technology, the LoRa digital voice module developed by NiceRF has made significant achievements in the development of high-end full-duplex intercoms.

The SA618F30, produced by NiceRF, is a high-performance, cost-effective, and highly integrated high-power full-duplex wireless audio module. It features a high-speed microcontroller, high-performance RF transceiver chip, and RF power amplifier built-in. It also provides a standard serial port for communication with the module, allowing for easy and quick setup of module parameters and control of transmission and reception functions. Users only need to connect audio amplifiers, microphones, and speakers to this module, and it can function as a small-scale intercom device.

Highlighting the Application of Full-Duplex Concurrent Reception and Transmission Intercom Modules in Fire Communication

Full-Duplex Intercom is well-known for allowing both communication parties to simultaneously send and receive data, enabling two-way communication, much like having a conversation where you can talk and hear the other person's response at the same time. Concurrent reception and transmission in intercom modules refer to the capability of wireless communication modules to simultaneously handle multiple connections and conduct data transmission and reception. This capability is crucial in modern communication systems as it can enhance communication efficiency, increase network capacity, and support simultaneous connections of multiple users and devices.

The SA618F30 full-duplex digital intercom module supports up to 8 devices simultaneous transmission (unlimited reception), with features including echo cancellation and multi-level wireless relay (MESH networking). It can be used for various specialized operations intercom, such as fire communication.

The fire intercom system plays a crucial role in emergency situations, as it needs to provide reliable two-way communication for firefighters to coordinate actions and convey critical information promptly. The use of full-duplex simultaneous transmission and reception technology can further enhance the efficiency and practicality of the fire intercom system.

The application of full-duplex simultaneous transmission and reception modules in fire systems can be comprehensively explained from the following points:

Real-time bidirectional communication: Full-duplex communication enables firefighters to issue instructions while simultaneously receiving real-time feedback, ensuring bidirectional flow of information. Efficiency improvement: In emergency situations, prompt delivery of instructions and feedback enhances the responsiveness of rescue operations.

Simultaneous transmission and reception function: Multi-tasking capability: Supporting firefighters to send messages while receiving critical information from other teams or command centers. Strengthening emergency response: This capability is crucial at fire scenes, aiding in coordinating actions among all parties and effectively responding to emergencies.

Multi-channel multiplexing and bandwidth saving: Efficient transmission: Simultaneous transmission to multiple recipients is made possible by the simultaneous transmission and reception technology, such as broadcasting emergency situations or emergency instructions. Resource optimization: This technology reduces the demand for bandwidth and system resources, enhancing the efficiency and reliability of information transmission.

Echo cancellation and wireless relay: Clear communication: Echo cancellation functionality ensures communication clarity in noisy environments. Network expansion: Multi-level wireless relay (MESH networking) functionality expands communication coverage, ensuring smooth communication in complex environments.

Enhanced communication reliability and security: Redundancy mechanism: Simultaneous transmission and reception technology support multiple devices transmitting simultaneously, enhancing communication redundancy and system reliability. Encryption technology: Combined with encryption technology, it ensures the security of communication content, preventing information leakage or malicious interference.

The application of full-duplex simultaneous transmission and reception technology in fire communication systems significantly enhances communication efficiency, reliability, and security, providing robust technical support for fire emergency response.

Additionally, by utilizing the simultaneous transmission and reception technology, fire intercom systems can simultaneously broadcast critical information to multiple recipients, such as emergency situations or instructions to different firefighting teams, without the need to send messages separately to each recipient. This multi-channel multiplexing approach not only saves bandwidth and system resources but also enhances the efficiency and reliability of information transmission.

In conclusion, full-duplex simultaneous transmission and reception technology enhances the efficiency and reliability of fire communication. Firefighters can transmit information in real-time while receiving feedback from other teams promptly, supporting rapid information exchange and decision-making, effectively responding to emergencies. Applying full-duplex simultaneous transmission and reception technology in fire intercom systems ensures timely and effective delivery of critical information and instructions, thereby enhancing the efficiency and safety of firefighting emergency response.

For details, please click：https://www.nicerf.com/products/ Or click：https://nicerf.en.alibaba.com/productlist.html?spm=a2700.shop_index.88.4.1fec2b006JKUsd For consultation, please contact NiceRF (Email: sales@nicerf.com).

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Let me introduce you to the unique features of the SA628F30 full-duplex digital audio module

SA628F30 is an embedded wireless digital and audio dual-function full-duplex transmission module. Users can not only wirelessly transmit data through the serial port but also wirelessly transmit voice signals through the I2S digital audio or analog audio interface. The module is equipped with a high-speed microcontroller, high-performance RF chip, and power amplifier, and adopts wideband spread spectrum technology, characterized by low power consumption, long distance, and flexible frequency adjustment.

SA618F22 supports multiple concurrent transmission and reception functions, as well as multi-level relay forwarding. This module adopts a highly integrated design, and users only need to connect audio amplifiers, microphones, and speakers to the module to easily achieve remote wireless transmission of digital voice.

The full-duplex audio module has the following notable features:

Simultaneous Bidirectional Transmission: Full-duplex communication allows for simultaneous transmission of information in both directions without the need for waiting slots or alternating transmissions.

8-Channel Full-Duplex Data/Voice Communication: Supports 8-channel full-duplex data or voice communication, enabling simultaneous transmission and reception of 8 channels of data or voice, enhancing communication flexibility and efficiency.

Multi-level Relay, Concurrent Transmission and Reception: Supports multi-level relay function, allowing devices to act as relays in the network, transmitting data or voice signals from one node to another, thereby expanding the network coverage and enhancing communication stability and reliability. Supports concurrent transmission and reception, enabling devices to receive data from other devices while transmitting data. This capability improves communication efficiency and throughput, enabling devices to exchange data more quickly.

Echo Cancellation: Equipped with echo cancellation function, capable of automatically identifying and eliminating echoes that may occur during voice calls. This feature ensures clarity of the call sound, enhancing communication quality and comfort.

I2S Digital Audio + Analog Audio: Equipped with an I2S interface, supports both I2S digital audio and analog audio inputs, providing more flexible audio input options. Whether it is digital audio or analog audio, it can be effectively processed and transmitted.

Simultaneous Transmission from Multiple Devices: Supports multiple devices simultaneously transmitting data or voice signals without restrictions. This capability enhances communication concurrency, allowing multiple devices to send information to the target device simultaneously, thereby improving communication efficiency and response speed.

Multi-level Wireless Mesh Networking: Supports multi-level wireless mesh networking, where multiple relay nodes are connected to form a self-organizing, self-repairing network. This network topology has good stability and scalability, making it suitable for communication requirements in large-scale coverage and complex environments.

Voice and Data Encryption: Equipped with voice and data encryption functionality, capable of encrypting transmitted voice and data to ensure the security and privacy of communication content. This feature effectively prevents unauthorized eavesdropping or tampering of communication content, enhancing communication security.

Long-distance Communication: Supports long-distance communication, enabling stable and reliable data or voice transmission. Suitable for scenarios requiring long-distance communication, such as remote monitoring and remote data acquisition.

Application fields of full-duplex digital audio modules:

Cycling Systems: Full-duplex technology can be used in communication devices for cycling systems, such as intercoms in cycling helmets. Cyclists can simultaneously receive navigation instructions, listen to music, and engage in voice calls, improving communication convenience and safety.

Earpiece Intercoms: Earpiece intercoms are commonly used in scenarios that require frequent communication, such as construction sites and security teams. Full-duplex technology enables real-time bidirectional communication, allowing users to speak and listen to responses simultaneously, thus improving work efficiency and safety.

Conference Call Systems: In conference call systems, full-duplex technology allows participants to speak simultaneously without conflicts, resulting in a more natural and seamless meeting communication experience, enhancing meeting efficiency and participation.

Fire Emergency Communication: In fire emergency communication, full-duplex technology enables rescue personnel to engage in simultaneous voice communication, facilitating timely coordination of actions and enhancing the efficiency and safety of emergency rescue operations.

Subway Communication: Subway systems often require communication between stations and trains to ensure the safe and smooth operation of trains. Full-duplex technology enables bidirectional communication, allowing station staff and train drivers to communicate in real-time, thereby improving the safety and efficiency of subway operations.

Tunnel Communication: Tunnel communication systems need to ensure timely communication between vehicles, equipment, and personnel in the tunnel to ensure the safe operation of the tunnel. Full-duplex technology enables bidirectional communication, enhancing emergency response capabilities and operational efficiency in tunnels.

In summary, the application of full-duplex audio module technology in these areas effectively improves communication efficiency, safety, and convenience, providing reliable solutions for communication needs in various scenarios.

For details, please click：https://www.nicerf.com/products/ Or click：https://nicerf.en.alibaba.com/productlist.html?spm=a2700.shop_index.88.4.1fec2b006JKUsd For consultation, please contact NiceRF (Email: sales@nicerf.com).

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What is the difference between dual-antenna design walkie-talkie module SA618F30-DZ and SA618F30

SA618F30-DZ and SA618F30 are a high cost-effective, highly integrated, high-power full-duplex Walkie-talkie module. These modules are equipped with a high-speed microcontroller, codec, high-performance RF transceiver chip, and RF power amplifier, and provide a standard serial port for module communication. This enables the easy and quick configuration of module parameters and control over its transmission and reception functions. Users only need to connect audio amplifiers, microphones, and speakers to this module, and it can function as a small-sized intercom. Its simplified interface and extremely compact size allow for widespread applications and convenient integration into various handheld devices, enhancing the comprehensive performance of end products. These modules can be utilized in places such as full-duplex headset-style intercoms and handheld intercoms, including scenarios like working at heights or property security.headset intercoms and handheld intercoms can be evaluated in application areas, such as aerial work, voice security and other applications.

The similarities between the Walkie-talkie module SA618F30-DZ and SA618F30:

Frequency Range: 410-490 MHz (Customizable to 150-960MHz)

Up to 8 devices can transmit simultaneously (Unlimited for receiving)

Supports echo cancellation function

Push-to-talk and VOX dual intercom modes

Multi-level wireless relay

I2S digital audio + Analog audio

Line In + Mic input

Supports data transmission

Low-power consumption during sleep

Supports OTA and serial port upgrades

Open field transmission distance is 3-4 kilometers

High receiver sensitivity: -117 dBm

Differences between SA618F30-DZ and SA618F30

The major difference between SA618F30-DZ and SA618F30 is that SA618F30-DZ adopts the concept of a dual-antenna design. SA618F30-DZ builds upon the SA618F30 module by separating the transmitting and receiving antennas. Simultaneously, it exposes the TXEN pin externally, making it more convenient for customers to add an external RF power amplifier to increase the transmission power and thereby extend the communication range

Ø SA618F30-DZ internal block diagram

Ø SA618F30 internal block diagram

To facilitate users in comprehensively understanding the performance of the SA618F30-DZ module, we conducted tests to analyze the relationship between module power and current at different voltages, as well as the relationship between power and current among different power levels under the same voltage.

The relationship between module power and current at different operating voltages(@433MHz)

The relationship between different power levels and current under the same voltage（@4.0v @433MHz)

SA618F30-DZ module size

SA618F30-DZ is a highly integrated, small size 1W high power full-duplex Walkie-talkie module. Its biggest feature is that the transmitting antenna and receiving antenna are separated, making it convenient for customers to add an additional radio frequency power amplifier. The SA618F30-DZ Walkie-talkie module supports 8 devices transmitting at the same time (receiving is not limited), and supports I2S digital audio + analog audio input. In addition, NiceRF provides differentiated customized services, and manufacturers are welcome to inquire.

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SA618F22 is an embedded full duplex transmission module, combining wireless digital and wireless audio.Users can not only wirelessly transmit data through serial ports, but also achieve wireless transmission of voice through I2S or analog audio interfaces.The module is equipped with a high-speed micro-controller, high-

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SA618F22 is an embedded full duplex transmission module, combining wireless digital and wireless audio.Users can not only wirelessly transmit data through serial ports, but also achieve wireless transmission of voice through I2S or analog audio interfaces.

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SA818 is a cost-effective integrate professional walkie talkie module.

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Parameter Test Conditions Min. Typ. Max. Unit Power Supply 3.3 4 5.5 V Working temperature -30 25 70 ℃ Current consumption Sleep current 65 uA RX Current @no voice output 75 mA TX current(High power) 4.2v,@30dBm 450 mA RF Parameters WorkingFrequency UHF 410 490 MHz Customizable frequency 150 960 MHz