AC Dimming Module, supports PWM control, 4 channels, 3.3V/5V logic level, AC 50/60Hz, 220V/110V This is currently the largest AC dimming module we offer. It is similar to the other two models, but has 4 channels. Therefore, you can connect all your lights, appliances, fans, and other devices to this single device. It can smoothly adjust light brightness and control the on/off state of electronic devices at the rate you set. Power supply voltage Up to 220V (5A~10A) AC frequency 50/60Hz TRIAC BTA16 - 600B Isolation method Optocoupler Logic level 3.3V/5V Zero Point Logic Level Modulation (DIM/) Logic Level Controls TRIAC On/Off Signal Current 10mA Environment: Suitable for indoor and outdoor use Operating Temperature: 20C to 80C Operating Humidity: Dry Environment Only ROHS3 Compliant with Standards Color: As Shown Material: Metal + PCB Package Contents: 1 x 4 channel power module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.