In this post we are reviewing the ESP-01 Wi-Fi Relay Module. It is one of the cheapest smart switches you can purchase currently for making smart home, internet of things, and other wireless do it ...

IN - This pin is also called the control pin because it is used to control the output of the relay. COM - is connected to the device you intend to connect. NC - terminal is connected to the COM ...

This PCB is designed to support SSR relays for controlling incoming Power(L) to the Igniter and Auger. This board also has circuitry to support a 12V PWM fan. This board uses compact solid state ...

Question: How difficult would it be to change the pin order, i.e pin 1 (firmware) triggers pin 2 (hardware) or reprogram the REST commands so that 00 turns off pin 2 not pin 1? Background: I am ...

Welcome to my quick review of an inexpensive 2-channel 5V relay module controlled via RS485 bus utilizing Modbus RTU protocol. As claimed by some online sellers, this easy-to-get Modbus RTU 2-Channel ...