SM1211E868

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RF transceiver modules are useful for a variety of applications, including long-range radio communication.The SM1211E868 is one example of an RF transceiver module, and it has a number of useful features.In this article, we will discuss the application field and working principle of the SM1211E868.

Application field

The SM1211E868 is a 433MHz wireless communication module used for point-to-point, point-to-multipoint, and multiple access communication.It can be used in a wide range of scenarios, such as in home automation, energy management systems, industrial networking, and automotive applications.It is a high-performance module with a link budget of up to -129 dBm, and a maximum data rate of 9.6 kbps.

Working Principle

The SM1211E868 operates through 2-FSK modulation and demodulation (Frequency Shift Keying).This type of modulation is relatively simple and only requires two frequency components, which makes it ideal for low data rate and long range communication.In this type of modulation, one frequency component is used to represent a logical 1 and the other is used to represent a logical 0.The module also features a variable packet size up to 250 bytes, as well as an integrated 64-bit encryption module for secure transmission and reception.

The SM1211E868 supports highly reliable wireless operation with its adaptive frequency hopping function.This feature reduces interference from other RF devices, which helps to ensure that the range and reliability of the communication link is maintained.The module also has several Power Saving Modes, which help to extend battery life in wireless applications.Additionally, the module has a built-in Temperature compen- sating feature that ensures consistent performance across a wide range of temperatures.

The SM1211E868 also has a built-in radio frequency (RF) power amplifier, which helps to ensure reliable transmission and reception of large data packets.The module also features an onboard LNA1 amplifier, which enables it to achieve long range communication of up to 1.3 kilometers.The module also supports a wide range of frequencies, from 430MHz to 470MHz.

Conclusion

The SM1211E868 is a high-performance RF transceiver module, and it is suitable for a wide range of applications.It features a link budget of up to -129 dBm, a maximum data rate of 9.6 kbps, adaptive frequency hopping, power saving modes, onboard temperature compensation, an RF power amplifier, and an onboard LNA1 amplifier.These features make the SM1211E868 an ideal choice for low data rate and long-range applications.

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