DC CC CV 8A 280W step down buck converter 7-40V to 1.2-35v power adjustable

Input voltage: 7-40V 
Output voltage: 1.2-35V 
Output Current: 8A, 9A the MAX 
Constant current(CC) range :0.2-8A 
Turn lamp current : constant current value * (0.1), turn lamp current and constant current value linkage.For example, CC value 3A, turn lamp current is set to 0.1 times constant current(0.1 * 3A = 0.3A). When adjust constant current to 2A , then turn lamp current is 0.1 times constant current (0.1 * 2A = 0.2A). 
Turn lamp current is fixed to 0.1 time in this version (actually turn lamp current value is probably not very accurate), it is for identify whether the battery is fully charged. 
Dropout voltage: 1V 
Output Power: 300(the Max). 
Conversion efficiency : up to 93% 
Output ripple: 20M bandwidth (for reference) 
Input 24V Output 12V 5A ripple around 50mV (excluding noise) 
Operating temperature: Industrial(-40 degree to +85 degree) 
No-load current : Typical 20mA (24V to 12V) 
Load regulation : ±1% (constant voltage) 
Voltage regulation : ±1% 
Constant accuracy and temperature: the actual test , the module temperature changes from 25 degrees to 60 degrees, the change of the constant current value is less than 5% (CC value 5A) 
Dynamic response speed : 5% 200uS 
Potentiometer adjustment: clockwise (increase), counterclockwise (decrease). The potentiometer close to the input port is for voltage adjust (CV), close to the output port is for current adjust(CC). 
Indicator: 2 colors indicator. When charging the indicator is RED, fully charged is GREEN(No load is green). 
Output short circuit protection : Yes , constant current(CC value you set) 
Input Reverse Polarity Protection: No. 
Output prevent backflow: No. 
Wiring: Terminal 
Size:65(L)*47(W)*23.5(H)mm