1 Channel Relay Module 5V — Arduino Compatible DC 12V Heat 8-channel multiplexer and microprocessor-compatible control

8-channel multiplexer and microprocessor-compatible control logic

cold-junction-compensated temperature measurement

Arduino Uno R3 — ATmega328P Development Board

P0 :Cooling / Heating

1 Channel Relay Module 5V — Arduino Compatible DC 12V Heat 8-channel multiplexer and microprocessor-compatible control1 Channel Relay Module 5V Single Channel Relay Board The 1 Channel Relay Module 5V is the simplest and most popular way to control high voltage AC or DC loads using a microcontroller like Arduino, ESP32, or Raspberry Pi. Whether you're building a smart home switch, an automated irrigation system, or an industrial control circuit, this relay module makes it effortless to switch mains powered devices safely from your 5V microcontroller. Technical