https://gce-electronics.com/en/extensions/1908-ipx800-v4-extension-24-entrees-x-24d.html
DIN rail module with 24 digital inputs, dry contact.
DIN rail module. 24 digital inputs extension for IPX800 V4 or V5.
din raildigital inputsmoduledry
https://circutor.com/en/products/industrial-iot-and-automation/ems-datalogger-and-scada-embedded/product/D73006./
Module 20 digital inputs, Line series | CIRCUTOR
Nov 10, 2023 - Line-M-3G, 3G/GPRS communications modem and Bus-Line to communicate with Line-EDS devices |CIRCUTOR
digital inputsline seriesmodulecircutor
https://www.dubai-sensor.com/isolated-module-16-digital-inputs-on-modbus-rtu-dat10148/
Datexel Isolated Module 16 Digital inputs on Modbus RTU - DAT10148
The device DAT10148 is able to acquire up to 16 digital inputs with connection NPN or PNP. The data are transmitted with MODBUS RTU / MODBUS ASCII protocol...
digital inputsmodbus rtuisolatedmodule
https://learn.adafruit.com/adafruit-arduino-lesson-6-digital-inputs?view=all
Overview | Arduino Lesson 6. Digital Inputs | Adafruit Learning System
This is Lesson 5 in the Learn Arduino Adafruit series. In this lesson, you will learn to use pushbuttons with digital inputs to turn an LED on and off.
digital inputsoverviewarduinolessonadafruit
https://www.ti.com/technologies/digital-io.html
Digital inputs and outputs | TI.com
Design a complete I/O solution for your PLC and industrial control systems
inputs and outputsdigitalti