<br>DIMMING LEVEL CONTROL VIA PWM SIGNAL OR VOLTAGE LEVEL For 50Hz and 60Hz AC Lines <br> This module is designed to control the intensity of incandescent lamps, AC LED dimmable bulbs, LED Strips, Power of heating elements and AC motor speed through a micro-controller by PWM signal or voltage level. <br>Device characteristics : PCB dimensions: 50mm x 75mm <br>Mounting holes diameter: 3.2mm <br>Distance between holes: vertical 68mm,horizontal 43mm <br>Working voltage 80...240VAC <br>Current 3A <br><br>Device power supply <br>- 5V or 3.3V Compatible for 50Hz and 60Hz AC LINE Autodetect AC LINE frequency <br>- 50Hz or 60Hz PWM input signal up to 10kHz Input voltage level up to VCC (0-3.3V / 0-5V) 50HZ LED <br>- show detected 50Hz AC Line 60HZ LED <br>- show detected 60Hz AC Line Both LED flashing <br>- when AC Line is not detected POPWE LED <br>- indicate device power <br>On-board Snubber circuit for triac protection, when you're controlling inductive load Low voltage side and high voltage side is completely isolated <br>Fully compatible with any MCU, Arduino or Raspberry boards NOT appropriate to change the brightness of fluorescent lamps !!! To control LED STRIP, diode rectifier must be connected before AC INPUT. <br>AC LOAD dimming control via firing angle method.