RFM98W-433S2

Serial Interfaces:	SPI
Package / Case:	16-SMD Module
Operating Temperature:	-20°C ~ 70°C
Mounting Type:	Surface Mount
Current - Transmitting:	20mA ~ 120mA
Current - Receiving:	10.8mA ~ 12.1mA
Voltage - Supply:	1.8 V ~ 3.7 V
Memory Size:	--
Utilized IC / Part:	--
Antenna Type:	--
Series:	--
Sensitivity:	-148dBm
Power - Output:	14dBm
Data Rate:	300kbps
Frequency:	433MHz
Modulation:	FSK, GFSK, GMSK, MSK, OOK
Protocol:	LoRa™
RF Family/Standard:	802.15.4, General ISM
Part Status:	Active
Packaging:	Bulk

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RF Transceiver Modules are ubiquitous in today\'s advanced wireless applications. This paper will discuss the RFM98W-433S2 application field and working principle.RF transceiver modules are mostly small, low-power radio frequency (RF) transceivers for embedded applications. They are designed to provide the basis for a complete wireless data link intended for applications such as remote sensing or control. The RFM98W-433S2 module is such a product that can provide a comprehensive platform for a variety of projects. It is a multifunctional 433MHz frequency transceiver with better cost performance, which is suitable for a variety of field monitoring and broadcasting applications. The RFM98W-433S2 module is widely used in radio frequency identification (RFID) systems, security systems, meteorological detection, agriculture monitoring, smart home and access control systems, as well as for communication between computers and other devices. This module employs Generic Frequency-Hopping Spread Spectrum (FHSS) modulation technology with 70 available frequencies providing enhanced data security and increased robustness. Additionally, the RFM98W-433S2 module also provides low power consumption, ultra-low standby power consumption, and transmission power tuning capabilities. Besides, it features high receive sensitivity (-118 dBm), long transmission distances (800m in an open field), and high data rate up to 157.2Kbps. The RFM98W-433S2 module operates with a 209-bit RF packet data structure, providing quick information exchange between the transmitter and receiver. The packet length is set by the sender and can be up to 256 bytes. As for the modulation mode of the RFM98W-433S2 module, it supports FSK, GFSK and OOK modes with modulation rates of up to 157.2Kbps. This can be advantageous in applications where data security is an issue.In terms of the technical specifications, the RFM98W-433S2 module incorporates the LoRa wireless communication protocol. It features a computational core of STM32F030F4P6 ARM Cortex-M0 32-Bit RISC core and a 128 kb program memory size. This module also supports Adaptive Frequency Hopping (AFH) which allow the frequency hopping sequence to be dynamically updated through communication protocol. The frequency range is 420~450MHz, meaning that it can work with frequency ranges up to 433MHz. As for the working principle, the RFM98W-433S2 module\'s transmit-receive operation consists of three main steps. First, the data packet is sent from the transmitter to the receiver. Second, the receiver receives the data packet and processes the information. Finally, the receiver responds to the transmitter according to the result of the data processing. During this process, the RF module incorporates various modulation techniques such as FSK, GFSK, and OOK to ensure that the data transmitted is secure and robust.To sum up, the RFM98W-433S2 module is a compact, multifunctional 433MHz frequency transceiver designed for embedded applications. It has been widely used in RFID systems, security systems, meteorological detection, agriculture monitoring, smart home and access control systems. The module also exhibits excellent performance in terms of range, power consumption, and receiving sensitivity. Besides, Adaptive Frequency Hopping technology is featured to provide maximum data security and robustness. This module also supports FSK, GFSK and OOK modes with varying modulation rates. All of these features combined make the RFM98W-433S2 a reliable and cost-effective solution for various wireless applications.

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