2.4G Full-duplex Intercom Technology Application Features

Wireless technology is divided into different categories according to different uses and frequency bands, including multiple wireless technology standards such as Bluetooth, Wi-Fi (IEEE 802.11), Infrared (IrDA), ZigBee (IEEE 802.15.4), etc. In terms of mainstream wireless audio and video products, there are only three categories of 27Mhz, 2.4G and Bluetooth. Compared with the low transmission efficiency of 27Mhz, the 2.4G transmission efficiency reaches 2Mbps, and continuous work is not required between the receiving end and the transmitting end, thereby greatly reducing power consumption and extending battery life. At the same time, in order to avoid the phenomenon that 27Mhz wireless frequency band is likely to interfere with each other, 2.4G also adopts automatic frequency modulation technology, and the receiving end and the transmitting end can find usable frequency bands.
In addition, what is more important is that the 2.4G RF wireless technology is a bidirectional transmission mode, and the 27Mhz one-way transmission is prone to signal interruption. The 2.4Ghz non-networked solution does not need to pay royalties to any organization or individual, and its cost is lower than other wireless network technologies (such as WiFi/Bluetooth, etc.).
Shenzhen Rui Electronics Co., Ltd. specializes in 2.4G audio and video transmission module research and development, production and sales. We have a cost-effective and mature solution for customers to choose, we can also customize different solutions according to the needs of customers. The production system took the lead in adopting 2.4G wireless technology to achieve multi-pass fast two-way communication while ensuring signal transmission stability. 2.4G wireless signal transmission and reception is free from obstruction from the outside and is not limited by the azimuth or angle. The signal is accepted quickly, accurately and reliably. The application in the wireless intercom system and wireless remote control is well reflected, 2.4G wireless signal supports bidirectional Communication, this system sends a control instruction each time, the system will return a signal whether the device performs successfully, so that the control is more accurate. 2.4G of wireless audio and video also has hundreds of channels while supporting frequency hopping technology. The channels of communication are not easily occupied, solving the situation that the channels of 315/433 MHz used in the past are easily occupied, and 2.4G wireless technology is not available. Interference, no radiation, global use, and environmental protection are completely suitable for home life use.
The 2.4G wireless intercom solution is a cost-effective RF voice multi-channel intercom solution developed with industry-leading technology that enables true digital multi-channel intercom solutions supporting 2.4G, 433M, 868M, 915M and other frequency bands. Design different transmission distances (10 to 800 meters) according to customer requirements. Features:
1. High performance, small size, low price, full duplex, full digital, two-way handsfree
2. Operating frequency: 2.4G/433M/868M/915MHz (customizable frequency band)
3 working voltage: 3.0 ~ 5.0V, with low voltage prompt function
4. Operating current: (20dBm transmit power) TX: max 130mA, RX: max 50mA, Sleep: 3uA
5. Programmable transmission power 0 ~ 30dBm, achieve different transmission distance (10 ~ 1000 meters)
6. Digital full-duplex voice intercom, digital echo cancellation, automatic squelch function
7.8-bit 16-bit audio sampling accuracy (can be customized for different specifications)
8. Signal-to-noise ratio 65 dB, dynamic range 96 dB receiver sensitivity -95dBm (depending on the video rate)
9. Support voice data transmission coexistence, UART data interface
10. Support multi-channel automatic frequency hopping and anti-jamming collision
11. Can achieve one-on-one, one-to-many, many-to-many talk (5 pass) mode
12.mic input, horn direct drive without peripheral circuit
13 module size, according to the size of the customer's product shell design PCB size

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