Relay Large Current Module 30A - High-Power Switch magnifying glass For more information on laser

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You can also compare it with PWM Frequency And Duty Adjustable Module- SG3525

MCU ATmega328 Clock 16 MHz Logic level 5V I/O 20 digital I/O

Keep wires short for stable reads

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Relay Large Current Module 30A - High-Power Switch magnifying glass For more information on laserSimple Load Switching for Arduino, ESP32, and Automation Builds The Relay Large Current Module 30A is a practical relay module from Circuitrocks for students, makers, and repair friendly builds. It fits well in projects that need switching external loads, while keeping setup straightforward for testing and prototype work. Compared with generic parts, this product stands out through details such as 30A. That makes it a solid choice for Arduino, ESP32,