4 Channel Ac Programmable Light Dimmer Module Controller Board For Arduino, Raspberry Compatible 50/60hz 4CH AC Light Dimmer Module Controller Board ARDUINO RASPBERRY Compatible 50/60Hz Connected LOAD power for each channel 500W long-term and 1000W short-term. Compatible with any MCU or ARDUINO, RASPBERRY boards. Auto detect 50Hz or 60Hz. / Working voltage from *80V to 240v. AC Phase Control Circuit (Dimming Circuit) / Home Automation, School Projects, Work Related Projects