LAMP_1 and LAMP_2 can also be renamed in order to be shown on alexa app as you like. RELAY_PIN_1 and RELAY_PIN_2 may also be changed as you wish. Next you have to do some simple wiring like in the ...

These commands control the relay's on and off states. setup() function: Initializes serial communication settings for the RS485 module and sets the control pin as an output. loop() function: ...

Relay boards are computer boards with an array of relays and switches. They have input and output terminals and are designed to control the voltage supply. Relay boards provide independently ...

The CO2 Duct Probe with Relay Module is for applications where On/Off ventilation or fan control is required to provide fresh air. This model includes a relay output module that plugs into the main ...

For that reason, [Hulk] designed a simple relay module in order to cut the amount of time he spends implementing this solution in his various other projects. While driving a relay with a ...