2 CH 12V Relay Board 3.7V 1800mAh 18650 Battery and DIN to any digital
Yard notes & kiln story
Description
2 CH 12V Relay Board 3.7V 1800mAh 18650 Battery and DIN to any digital and DIN to any digital GPIO pin on your microcontroller Universal PWM Control: Standard 50 Hz PWM input works directly with Arduino Servo library