Features 1、High Accuracy: This LED constant current driver board consists of high accuracy reference voltage, amplifier, current mirror and so on. 2、1MHz Switching Frequency: This LED constant current driver board adopts 1MHz switching frequency, which is very sensitive. 3、High Efficiency: This LED constant current driver board has high efficiency up to 96%, which is perfect for LED drivers which is very practical. 4、Multifunctional: This LED constant current driver board is multifunctional with high side current detection and over temperature current drop function. 5、Knob Design: This LED constant current driver board comes with a knob switch, which is very easy and convenient to use and adjust. Specification Item Type: LED Constant Current Driver Board Material: PCB Voltage: DC 5V-24V Current: Constant Current 600mA Dimming Range: 0-100% Current Adjustment: 1. Through Adjustable Resistor. 2.Through PWM Control. Package List 1 x LED Constant Current Driver Board ( With Twisted Cap, Nut, Spacer)