NRF24L01+PA+LNA SMA Wireless Transceiver Antenna The NRF24L01 module is a state-of-the-art RF module that uses Nordic Semiconductor's 2.4GHz transceiver, the NRF24L01+. This IC operates in the 2.4GHz band and comes with many new features, such as additional pipelines, buffers, and an auto-retransmit function. The board has a reverse-polarized SMA connector that maximizes the RF range, as well as a PA and LNA circuit, which enables long-distance communication when combined with an external antenna.The module comes with a 2DB 2.4G antenna and can achieve a communication distance of 800-1K meters with a transmission rate of 250Kbps on open-air. It is an affordable and user-friendly option for setting up a wireless communication system, striking a good balance between cost and wireless transition performance.The nRF24L01+ module is compatible with various systems, including MCU/ARM/PIC/AVR/STM32, and its power amplifier and SMA antenna design allow for wireless communication up to 1000 meters without barriers. Features : It uses 2.4GHz global open ISM band, with license-free. Transmit power is greater than +20 dBm. Support six-channel data reception. 2Mbit/s speed makes high-quality VoIP possible Multi-frequency points: 125 frequency points meet the needs of multi-point communications and frequency hopping. Low cost: integrated with high-speed signal processing parts associated with RF protocol, such as: automatically re-send lost packets and generate acknowledge signal; SPI interface facilitates the communication with MCU I/O port. Facilitate the development for customers, without development RF part. Software programming is fully compatible with NRF24L01 modules. Package Includes: 1 x nRF24L01p 1 x Antenna Specifications High air data rate 250kbps, 1 and 2Mbps Transmitter 11.3mA at 0dBm output power Host Interface 4-pin hardware SPI,3 separate 32 bytes TX and RX FIFOs Low Power Management 1.9 to 3.6V supply range Dimensions 16.5mm*45.5mm Weight  25 grams

NRF51822 Bluetooth module The NRF 51822 BLE 4.0 Bluetooth Module Wireless Low-power Development Board is a versatile wireless module optimized for ultra-low power wireless applications. It utilizes the nRF 51822, which is a multiprotocol Bluetooth® 4.0 low energy/2.4 GHz RF SoC developed by Nordic Semiconductor.  Built around the nRF 51822 SoC, the Core51822 wireless module provides an easy-to-use interface for developers who want to incorporate Bluetooth connectivity into their projects. This module is ideal for wireless sensors, health and fitness trackers, smart home automation, and more. One of the standout features of the nRF 51822 is its ultra-low power consumption. With less than 10 µA power consumption in sleep mode, the nRF 51822 can operate for several years on a single coin cell battery. Designed to be user-friendly and integrate seamlessly with existing projects, the Core51822 module includes all necessary components, such as an onboard antenna, voltage regulator, and crystal oscillator. Additionally, it has several input and output pins that can be used to connect to other devices and sensors, making it a versatile option for various applications.

NRF51822 BLE4 2.4GHz Bluetooth 4.0 Module The NRF51822 BLE4 2.4GHz Bluetooth 4.0 Module is a wireless module that uses the nRF51822 chip. This chip is a low power multiprotocol Bluetooth 4.0/2.4 GHz RF system-on-chip designed for wireless applications that require ultra-low power consumption. The module has a communication distance of up to 30 meters in open outdoor conditions at a data rate of 1M and operates on a frequency range of 2.4GHz with an operating voltage of 2.0V to 3.6V.The Bluetooth module is fully compatible with the NRF24L series and pinout compatible with NRF51xxx series, making it suitable for various applications such as wearable devices, Bluetooth intelligent applications, mobile phone accessories, RFID labels, smart home appliances, industry control, and data acquisition systems.The nRF51822 chip is built around a 32-bit ARM Cortex-M0 CPU with 256KB flash and 16 KB RAM. It has a flexible 2.4 GHz radio that supports Bluetooth Low Energy and 2.4 GHz, and is fully supported by the Bluetooth LE and ANT software development kit. Features Based on the nRF51822 SoC, a multi-protocol Bluetooth low energy/2.4 GHz dedicated RF single-chip solution Supports Bluetooth Low Energy (BLE) 4.0, a low-power, low-data-rate wireless protocol designed for IoT devices Equipped with a 2.4 GHz multiprotocol RF transceiver Contains an ARM Cortex M0 32-bit processor Includes 128-bit AES HW encryption for security Has 256kB flash and 16kB RAM for storage and processing Features programmable peripheral interfaces for flexibility Can communicate up to a distance of 30 meters in open outdoor environments with a 1M data rate Widely used in various applications such as PC peripherals, internet TV, toys, remote controls, sports/fitness/health sensors, and automation. Applications: Wearable devices Bluetooth intelligent application Mobile phone accessories RFID labels Smart home appliances Industry control Data acquisition system Package Includes: 1 x NRF51822 BLE4 2.4GHz Bluetooth 4.0 Module Specifications: Onboard chip nRF51822  Communication distance 30m Frequency range 2.4GHz Operating voltage 1.8V - 3.6V Operating temperature -40° ~ 85° Pinhead pitch 2 mm Antenna Onboard antenna Dimension 100 x 50 x 30mm Weight 150gm

NRF51822 Ibeacon Wireless Bluetooth Module The NRF51822 iBeacon Wireless Bluetooth Module is a low-power, multi-protocol wireless system-on-chip (SoC) that is designed for Bluetooth low energy and 2.4GHz ultra-low-power wireless applications. This module is ideal for commercial advertising and indoor location-based services due to its accurate hardware and robust firmware. This NRF is a general-purpose, ultra-low power SoC that is ideally suited for Bluetooth Low Energy and 2.4 GHz proprietary wireless applications. This module is based on Nordic's high-performance wireless SOC chip NRF51822 and is a complete low-cost, low-power design for Bluetooth low-energy applications. The NRF51822 module is ultra-compact at 20mm diameter and can run from CR1632 coin-cell batteries, making it an ideal solution for wearable devices, IoT sensors, and other battery-operated devices. The NRF51822 is a multiprotocol SoC with Bluetooth Low Energy (BLE) and a 2.4GHz transceiver that supports both chip solutions and module solutions. If you're interested in programming the NRF51822 iBeacon module, note that Core Bluetooth is a fairly low-level framework and not very easy to learn. Applications:  Indoor navigation Mobile payment In-store shopping guide Flow analysis Package Includes: 1 x NRF51822 Ibeacon Wireless Bluetooth Module Specifications: Operating Voltage 2V to 3.6V Frequency 2402~2480MHz Number of channels 40 Emission current 10.5mA Transmission rate 1Mbps Dimensions 25x25x4mm Weight 4g

PN532 NFC-Near Field Communication RF-ID V3 Module NFC technology was derived from RFID and allows users to connect to other devices, make payments, send media and files, and use NFC tags, easily the most creative use case for the technology. You can create an NFC scanner app for practically anything, making NFC app development extremely popular. NFC technology provides a simple method of contactless communication between gadgets in close proximity. An NFC tag can share and link to information including web pages, social media, customer loyalty platforms, and more. You can also leverage NFC to open doors secured with contactless locks and log on to computers. All of these actions have something in common: they invoke an action based on you placing your phone (or any other NFC-enabled device) near the thing you want to interact with or read. The PN532 is a highly integrated transmission module for contactless communication at 13.56 MHz including microcontroller functionality based on an 80C51 core with 40 Kbytes of ROM and 1 Kbytes of RAM. The PN532 combines a modulation and demodulation concept completely integrated for different kinds of contactless communication methods and protocols at 13.56 MHz with an easy-to-use firmware for the different supported modes and the required host controller interfaces. Applications: The primary uses of NFC are: Connect electronic devices, such as wireless components in a home office system or a headset with a mobile phone Access digital content, using a wireless device such as a cell phone to read a “smart” poster embedded with an RF tag Make contactless transactions, including those for payment, access, and ticketing Package Includes: 1 x RFID Module 1 x RFID Card 1 x RFID Tag 1 x Set of Wires 1 x Pin Specifications Interface Support I2C, SPI, and HSU  Reading Distance  5cm~7cm Dimensions  11 x 9 x 5cms Weight 50 grams

RC522 RFID 13.56MHZ Reader Writer Module This RC522 RFID Card Reader Module 13.56MHz is an MFRC522-based Module that can be used in a wide range of applications. RC522 is the highly integrated RFID card reader and writer that works on non-contact 13.56mhz communication, is designed by NXP with a low power consumption, low cost, and compact size read and write chip, and is the best choice in the development of smart meters and portable hand-held devices. RFID Cards are frequently used as personal identifiers in personnel management or access control systems. This is a version of the popular ISO format identity card. The RFID technology is used for sensing and identifying tagged people and objects for access control, automation, and a whole range of different applications.   Also, check thePN532 NFC-Near Field Communication RF-ID V3 Module. Application: Smart home project Voice broadcast access control system Attendance punch card system Can be used in RF communication and identification applications. Automatic billing systems Verification/Identification system Access control systems   Also, check RFID Access Control Door Lock . Package Includes: 1 x RFID RC522 1 x RFID Card 1 x RFID Key Chain 2 x Pins Specifications: Operating Voltage DC 3.3V Operating Current 13-26mA Idle Current 10-13mA / DC 3.3V Sleep Current 80uA Peak Current 30mA Operating Frequency 13.56MHz Module interface SPI Data transfer rate Maximum 10Mbit/s Reader Distance ≥ 50mm / 1.95" (mifare 1) Dimension 40mm*60mm(L*W) Video Tutorial:

DC 5V 433Mhz RF Wireless Transmitter Module and Receiver Kit The TX-ASK is an effective low-cost solution for using the 433 MHz frequency. This ASK hybrid transmitter module is designed with a saw resonator, making it small, cost-effective, and easy to use for designing. However, it's important to note that this 433mhz rf transmitter and receiver kit does not support direct UART communication when connected to PCs or microcontrollers due to the high levels of noise on these frequencies.The RF module comprises a 433mhz rf transmitter and receiver. The transmitter receives serial data and wirelessly transmits it through RF via its antenna connected at pin4. The transmission rate can be set to 1kbps or 10kbps. The transmitted data is received by an RF receiver operating at the same frequency as the transmitter. This 433 MHz RF transmitter and receiver pair is cost-effective and can transmit signals up to 100 meters (although the antenna design, working environment, and supply voltage will significantly impact the effective distance). It's ideal for short-distance battery-powered device development. read more : RF 433 MHZ TRANSMITTER AND RECEIVER (WITH DEMO) Video Tutorial: Applications: Remote Controls Automation System Wireless Security System Sensor Reporting Car Security System Remote Keyless Entry Package Includes: 1 X RF Wireless Module Pair (433MHZ) Specifications: Range in open space(Standard Conditions)   100 Meters RX Receiver Frequency   433 MHz RX Typical Sensitivity   105 Dbm RX Supply Current   3.5 mA RX IF Frequency   1MHz RX Operating Voltage   5V TX Frequency Range   433.92 MHz TX Supply Voltage   3V ~ 6V TX Output Power   4 ~ 12 Dbm

RF433 MHz Transmitter Receiver Wireless Module This 433 MHz wireless rf module is a superheterodyne ASK (Amplitude Shift keying ) / OOK (On-Off keying based ) module. Design ideal is to use a SAW filter, highly suitable for industry control or bad place for use, strong anti-jamming. Built-in automatic gain circuit (AGC), it will automatically change front-end LNA gain among received signal strength also makes signal output will not be strong or weak signals which caused by phase distortion so that it can rise higher sensitivity. To receive the local oscillation circuit for the PLL lock loop design, no offset, and stability is high. The frequency is 433MHz and the receiver structure is Superheterodyne, the received signal is OOK. After receiving the signal, it will output the TTL signal to the external decoder IC for decoding. It is convenient to the applicant in different products and external components are not necessary to make products be wireless also bring value-added for your products. read more : RADIO FREQUENCY Applications: Remote Controls Automation System Wireless Security System Sensor Reporting Car Security System Remote Keyless Entry Package Includes: 1 x RF433 Transmitter 1 x RF433 Receiver Specifications Operating voltage 3.6~5.5V sensitivity 110dBm Operating Current  5 mA Dimensions  5 x 4 x 3cms  Weight  15 grams

RFID Access Control Door Lock External reader one weigand26 interface. Lock interface relay output or level output Exit button one interface Bellone interface. Package Includes: 1 x RFID Access Control Door Lock Specifications Voltage 12V DC Current 1.2A Dimensions  11.7x11.7x2.1cm Weight 150 grams

RFID Card R/W This is 125KHz RFID Card used for Contactless transmission of data and supplies energy with no battery needed. Its Operating distance is Up to 100mm depending on antenna geometry. Operating frequency is 125KHz and Data transfer speed is 106 kbit/s.  RFID Cards are frequently used as personal identifiers in personnel management or access control systems. This is a version of the popular ISO format identity card.  It is featured with Data integrity of 16 Bit CRC, parity, bit coding bit counting which allows Anti-collision. These cards are typically used in ticketing transaction: <100 ms including backup management. Also check RFID Card Read, and it is part of the RFID/NFC category in the IOT & Wireless section. The RFID card reader allows for contactless communication between a reader and an RFID tag or card. It is commonly used in applications such as asset tracking, inventory management, and access control systems. Applications : Public transportation Access control Event Ticketing Gaming & identity Package Includes: 1 x RFID Card Read Specifications Card Type  RFID Card R/W Colour White  Dimensions 86 mm X 54 mm Weight 15 grams