AC Light Dimmer Module Controller ARDUINO RASPBERRY Compatible 50/60Hz 80-240VAC | Auto Detect AC LINE frequency - 50Hz or 60Hz. Device can be controlled via variable resistor ! | Compatible with any ARDUINO, RASPBERRY and other MCU. PWM input signal up to 10kHz | AC LOAD dimming control via firing angle method. Working voltage 80...240VAC | AC Phase Control Circuit (Dimming Circuit) / Home Automation, School Projects, Work Related Projects. Plus can be used as regular RELAY