Adafruit module with I2C TCA9548A multiplexer

DAQ device based on USB communication and equipped with 96 digital inputs/outputs and a 32-bit counter. Digilent 6069-410-032

32-channel IO expander with 14 analog inputs. Communicates via the WiFi wireless interface. Numato Lab GPWIFI320001

64-channel IO expander with 32 analog inputs. It communicates via the USB interface. Numato Lab GP640001

32-channel IO expander with 7 analog inputs. It communicates via the USB interface. Numato Lab GP320001

8-channel module with digital inputs/outputs with an operating voltage range from 5 to 36 V. It communicates via the RS485 interface and supports communication within the Modbus RTU protocol. The board is enclosed in a housing that can be mounted on an industrial rail. Waveshare Modbus RTU IO 8CH

8-channel analog acquisition module with default current measurement mode (0–20 mA), designed for industrial applications requiring stable and precise data acquisition. Compatible with current sensors, it supports RS485 communication and the Modbus RTU standard, allowing easy integration with SCADA systems and PLC controllers. Galvanic isolation and noise immunity make it suitable for environments with high EMC requirements. Ideal for industrial process monitoring, environmental parameter measurement, and building automation.

16-channel GPIO expander with an I2C interface microcontroller can interface with 16 fully configurable digital input/output pins. It can produce PWM signals, so you can dim LEDs. It can be set to blink or even breathe pins at varying rates. With a built-in keypad engine, it can interface with up to 64 buttons set up in an 8x8 matrix. BOB-13601

An 4-channel I2C expander module, which is based on the TCA9546A chip. It allows connecting several devices with the same address to a single I2C interface. Adafruit 5664

A versatile expander supported by the I2C interface, which significantly expands the capabilities of microcontrollers and microcomputers. It is based on the ATSAMD09 microcontroller and comes with default software that can be modified to suit the needs of the project. Adafruit 3657

Module with analog output 0-20 mA or 4-20 mA. It communicates via the RS485 interface and supports the Modbus RTU protocol. The board is enclosed in an industrial housing. Wellpro WP3076ADAM

32-channel IO expander with 7 analog inputs. It communicates via the USB interface. Enclosure included. Numato Lab GP320001E

Compact module that allows easy changing of I2C sensor addresses, allowing coexistence of multiple devices with the same address on one bus. With DIP switches and optional soldering resistors, users can easily configure sensor addresses without having to modify the code or use external components. DFRobot DFR1185

KAmod I2C Hub8 enables splitting the I2C bus into eight independent channels with a voltage translation function, which allows effective integration of multiple devices with repeating addresses. The module is recommended for advanced microprocessor projects with bus separation requirements and diverse voltage levels.

8-channel IO expander with 6 analog inputs. It communicates via the USB interface. Version without Pull-Up resistors. Numato Lab GP80001

Module with an IO pin expander based on the TCA9534 system. It allows you to add 8 GPIO pins to an I2C-controlled project. SparkFun DEV-17047

DAQ device based on USB communication and equipped with 8 counter inputs, 4 PWM outputs and 8 digital IOs. Digilent 6069-410-028