This module can be purchased on Xinabox CC.
This ☒CHIP forms part of the output modules and is equipped with a high speed PWM IO expander chip. The OL03 module provides both power conversion accepting either 12V or 24V as well as PWM strip light control.
The OL03 ☒CHIP is housed in an compact 2U×4U chip with four connection ports.
The OL03 is based on the FAN5702 6-LED driver. The datasheet can be viewed here FAN5702.