FAQ
FAQ
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How Window/Door Sensor Works?

Door Sensor is composed of a wireless transmitter module and a magnetic block. There is a "reed switch" inside the wireless transmitter module. When the distance between the magnet and the reed switch is within 1.5cm, the reed switch is disconnected. Once the distance exceeds 1.5cm, it will alarm

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Which FSK Transceiver Module is better, Si4438 RF module or Si4463 RF module?

Both Si4438 and Si4463 are RF chips launched by Silicon Labs. The RF modules developed from these two chips have their own advantages and strengths. The performance of Si4463 RF module is far better than the Si4438 RF module. If cost is not a problem, the Si4463 RF module is definitely the best choice.

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Communication Principle of LoRa FHSS (Frequency-Hopping Spread Spectrum)

LoRa FHSS (Frequency-Hopping SpreadSpectrum) technology is used when a single packet time may exceed the maximum channel dwell time allowed by relevant regulations. Turn on hopping mode in LoRa by operating RegHopPeriod and FreqHoppingPeriod registers with non-zero values.

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Application of Radio Frequency in the Internet of Things

Just as the literal meaning of "IoT = Things + Internet", data transmission is required to connect to the Internet. The non-contact data transmission is the application scenario of radio frequency. Almost all IoT products will have RF transmission. The RF transmission with low transmit power has a short distance...

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What is Switching Value RF Transmitter/Receiver Module?

What is Switching Value RF Transmitter/Receiver Module? The switching value is the on-off signal, it is also called PLC switch value, which can be understood as pulse value. Switching Value RF Transmitter/Receiver Module is a device that can collect input/control output of switch signals (I/O signals)...

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What is the Receiving Sensitivity and How does it affect the Transmission Distance?

The receiving sensitivity is the minimum signal receiving power that the RF receiver can take out the useful signal correctly. The receiving sensitivity of wireless transmission is similar to people's hearing when they are communicating

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What is the Most Real-Time IoT Applications Nowadays?

What is the most Real-Time IoT Applications? Smart medical, Smart Homes, Smart City, Intelligent Agriculture, Smart Industrial, Smart Supply Chain, Retail Purpose Applications, Smart Transportation, Smart Grid, Smart Wearables...

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What is LoRa? Where LORA Technology Can be Used?

What is LoRa? The full name of LoRa is ‘Long Range’, which has reflected the characteristics of this wireless technology from its full name – “wide coverage” (link budget of 168dB). It is a wireless technology that offers long range, low power and secure data transmission for M2M and IoT applications

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What is SPI and the Advantages of SPI Bus?

SPI is the abbreviation of “Serial Peripheral Interface”, which is a standard four-wire (SCLK, MISO, MOSI, SS) synchronous two-way serial bus. SPI interface was first defined by Motorola, and is mainly used between EEPROM, FLASH, real-time clock, AD converter, digital signal processor and digital signal decoder

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What is the Relationship Between the RF module and the MCU?

What is the relationship between the wireless RF module and the MCU, why some RF modules with MCU, and some modules without? Which role is the MCU plays in the RF module? Let’s learn this together!

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What is Tranparent Transmission and Tranparent Transmission Module?

Transparent transmission means the data forwarding device or wireless module is unconscious and no need to care, it just retransmit the signal/data. The Tranparent Transmission Module is a module that transmits data using the pass-through mode.

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What is dBm? What does it have to do with the power unit mW?

What is dBm? What does it have to do with the power unit mW? dBm means decibel milliwatt, full name in English is "decibel relative to one milliwatt", which refers to the absolute value of power. While db is a pure counting unit, representing a relative value, it must be the result of comparison...

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What is LoRaWAN? What is the Key Features of LoRaWan?

LoRaWAN is a Low Power, Wide Area networking protocol developed by the LoRa Alliance, it defines the end-to-end standard specifications for using LoRa technology, including Internet of Things market security, energy efficiency, roaming, and configuration on-boarding. It was originally called LoRaMAC...

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What is the RSSI Function of the Wireless RF Module?

What is the RSSI Function of the Wireless RF Module? Full name of RSSI is "Received Signal Strength Indication", it is an optional part of the wireless transmission layer, used to judge the link quality, and whether to increase the broadcast transmission strength.

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Three Different Ways of Communication (SPI, I2C, USART) Adopted on RF Modules

Generally, there are three different communication modes adopted on the RF modules, namely SPI (Serial Peripheral Interface), USART (Universal Synchronous/Asynchronous Receiver/Transmitter), I2C (Inter-Integrated Circuit)...

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Will 2.4G wireless module and BLE/Bluetooth module interfere with each other?

Will 2.4G wireless module and BLE module interfere with each other? The answer is "Yes". If we find that Bluetooth module and 2.4G wireless module interfere with each other, the best way is to stagger the frequency. In short, switch to an undisturbed frequency.

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Application Range of Common Used Radio Frequency (RF) Bands

Application Range of Common Used Radio Frequency (RF) Bands: NFC, FM, Antenna, Remote control, DVB, LoRa, RFID, NB-IOT, 2G, 3G, 4G, 5G, Bluetooth, WiFi...

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Difference Between Inching, Interlock and Self-Locking in RF Decoding

In order to meet the needs of different applications, the output modes of hardware decoding and receiving circuit are usually divided into Inching (M), Interlocking (L), and Self-locking (T). But what is the difference between Inching, Interlock and Self-Locking?

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What are the Regular Frequency Bands of Wireless Modules in Major Countries?

With the continuous progress of the Internet of Things (IoT)industry, wireless communication technology is also booming. What are the regular frequency bands of wireless modules in major countries? 2.4Ghz is worldwide frequency band; North America / UK / Japan / Korea is 915Mhz; EU is 863-868mhz, 433MHz is widely used in Asia and Middle East.

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What is RF Module (Radio-Frequency Module)?

An RF module (short for radio-frequency module) is (usually) a small electronic device used to transmit and/or receive radio signals between two devices. In an embedded system it is often desirable to communicate with another device wirelessly, include RF Receiving module & RF Transmitter module...

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Receiver modules

An RF receiver module receives the modulated RF signal, and demodulates it. There are two types of RF receiver modules: superheterodyne receivers and superregenerative receivers. Superregenerative modules are usually low cost and low power designs using a series of amplifiers to extract modulated da

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Types of RF modules

The term RF module can be applied to many different types, shapes and sizes of small electronic sub assembly circuit board. It can also be applied to modules across a huge variation of functionality and capability. RF modules typically incorporate a printed circuit board, transmit or receive circuit

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Transceiver modules

An RF transceiver module incorporates both a transmitter and receiver. The circuit is typically designed for half-duplex operation, although full-duplex modules are available, typically at a higher cost due to the added complexity.

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Host microcontroller interface

RF modules typically communicate with an embedded system, such as a microcontroller or a microprocessor. The communication protocols include UART, used in Digi International's X-Bee modules, Serial Peripheral Interface Bus used in Anaren's AIR modules and Universal Serial Bus used in Roving Networks

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Which kind of wireless protocols are currently used on the RF modules

RF modules, especially SoC modules, are frequently used to communicate according to a pre-defined wireless standard, including: Zigbee, Bluetooth Low Energy (BLE), Wi-Fi, IEEE 802.15.4, Z-Wave, Wirepas,etc.However, RF modules also frequently communicate using proprietary protocols, and Wi-Fi, Blueto

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System on a chip (SoC) module

An RF transceiver module incorporates both a transmitter and receiver. The circuit is typically designed for half-duplex operation, although full-duplex modules are available, typically at a higher cost due to the added complexity.

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How IOT (Internet-of-Things) Works?

How IOT (Internet-of-Things) Works?The entire IOT process starts with the devices themselves like smartphones, smartwatches, electronic appliances like TV, Washing Machine which helps you to communicate with the IOT platform.Here, are four fundamental components of an IoT system:1) Sensors/Devices:

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Where are RF Modules been used?

RF modules are most often used in medium and low volume products for consumer applications such as garage door openers, wireless alarm or monitoring systems, industrial remote controls, smart sensor applications, and wireless home automation systems. They are sometimes used to replace older infrared

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What is the typical applications of RF modules?

RF modules can be widely used on: Traffic Monitoring, Environmental Monitoring, Remote control, Telemetry, Small-range wireless network, Wireless meter reading, Access control systems, Wireless home security systems, Area paging, Industrial data acquisition system, Radio tags reading, RF contactless

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RF signal modulation

There are several types of signal modulation methods commonly used in RF transmitter and receiver modules: ASK (Amplitude Shift Keying) Modulation; OOK Modulation; Frequency Shift Keying (FSK) Modulation; Direct Sequence Spread Spectrum Modulation; Frequency-hopping spread spectrum (FHSS) Modulation.- SHENZHEN DREAMLNK TECHNOLOGY CO., LTD

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What is the Main Factors that Affect RF Modules' Performance?

As with any other RF device, the performance of an RF module will depend on a number of factors. For example, by increasing the transmitter power, a larger communication distance will be achieved. However, this will also result in a higher electrical power drain on the transmitter device...

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What is the Physical Connection Method of RF Modules?

What is the Physical Connection Method of RF Modules? There ae mainly 3 physical connection methods of RF modules: Land grid array, Through-hole, and Castellated boardlet - SHENZHEN DREAMLNK TECHNOLOGY CO., LTD

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What is the "Internet of Things" (IoT)?

The Internet of Things, or IoT, refers to the billions of physical devices around the world that are now connected to the internet, all collecting and sharing data. It is a network of physical objects or people called "things" that are embedded with software, electronics, network, and sensors that allows these objects to collect and exchange data.

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Which kind of wireless protocols are currently used on the RF modules?

RF modules, especially SoC modules, are frequently used to communicate according to a pre-defined wireless standard, including: Zigbee, Bluetooth Low Energy, Wi-Fi, IEEE 802.15.4, Z-Wave, WirepasHowever, RF modules also frequently communicate using proprietary protocols, such as those used in garage

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