R， G， B pins is connected to either the present current-limiting resistor， which can prevent the module from burn-out. Also， it can be mixed and have different colors by adjusting three primary colors by pwm and can be compatible with all types of MCU interfaces.

Working voltage: DC 3.3 ~ 5V

Dimensions: 3.9 x 3.5 x 1.2 cm

Weight: 6g

Hole spacing: 2.7cm

Hole diameter: 0.3cm

Led the drive mode: common cathode drive

Package included:

1 x LDTR-0006 RGB LED Module for Arduino