A-GSM II Shield - expansion board with GSM/GPRS module for Arduino and Raspberry Pi

Connect your Arduino-compatible to the Internet with this WiFi shield that features the FCC-certified ATWINC1500 module from Atmel. Adafruit 3653

UART-RS485 converter module. It enables communication of Arduino boards with industrial modules. DFRobot DFR0259

Arduino compatible shield for the ESP8266 WiFi SoC – a leading platform for Internet of Things (IoT) or WiFi-related projects. WRL-13287

Ethernet network module with W5500 chip. It communicates via the SPI interface, it has a built-in TCP/IP stack. There are two Grove connectors with I2C and UART on the board. Seeed Studio 103030021

Module with Himax HM-01B0 camera and LoRa communication dedicated to Arduino Portenta H7 boards. Arduino ASX00026

Expansion board based on the Wiznet W5200 Ethernet system. It allows you to easily connect Arduino to an Ethernet network. DFRobot DFR0125

Adafruit 789 - Adafruit PN532 NFC/RFID Controller Shield for Arduino + Extras

Advanced expansion board for Arduino. It has support for mini-SIM cards and NB-IoT cards. Thanks to the GNSS module (Global Navigation Satellite System), it supports GPS, GLONASS, Galileo, QZSS and BeiDou GPS navigation systems. The module is powered by 7-12V voltage. DFRobot DFR0572

Connect your Arduino-compatible to the Internet with this WiFi shield that features the FCC-certified ATWINC1500 module from Atmel. Adafruit 3654

Ethernet board with mini SD card slot based on W5100 controller.

Module with a radio receiver operating at 315 MHz for Arduino. DFRobot TEL0075

Shield designed for IoT applications with LTE CAT M1/NB-IoT SARA-R4 modem. The board is compatible with Arduino, allows you to add communication via cellular networks to Arduino boards. SparkFun CEL-14997

Multifunctional expander (shield) for NUCLEO and Arduino equipped with Bluetooth 2.0+EDR (HC-05) interface, MEMS 3DoF LIS35, LED-RGB, joystick and analog STLM20 temperature sensor developed and produced by KAMAMI.

Shield for STM32 series Nucleo, XNucleo and Arduino series for communication via RS485 and CAN interfaces (CAN is only available for Nucleo and XNucleo plates). Shield is based on MAX3485 and SN65HVD230 systems

A USB host module that contains all the digital logic and analog circuitry necessary to implement a USB peripheral or host controller using the SPI interface. SparkFun DEV-21247

KAmodNFC is an expansion board with M24LR64E-R chip – dynamic tag with 64kb EEPROM memory and dual communication interface (I2C/RF). On board is placed also signalization of energy harvesting function, which is in M24LR64E-R chip embedded.