DROK DC Buck Converter Adjustable Color LCD Display, 6-55V to 0-50V 5A Step Down Converter Voltage Regulator Power Supply

PARAMETERS: 
Input voltage range: DC 6-55V 
Output voltage range: DC 0-50V 
Output current range: 0-5A 
Output power range: 0-250W 
Output voltage resolution: 0.01V 
Output current resolution: 0.001A 
Output voltage measurement accuracy: ±(0.5% + 1 digit) 
Output current measurement accuracy: ±(0.5% + 2 digits) 
Product dimension: 79mm x 43mm x 48mm 
Open size: 71mm x 39mm 
Note: You must make sure that power supply input voltage must be 1.1 times more than the output. 

WIRING INSTRUCTION: 
IN+: input positive OUT+: output positive 
IN-: input negative OUT-: output negative 

WARM TIPS: 
1. The input voltage range is DC 6-55V and 55V is the maximum voltage, so please leave room for usage, or the module will be burnt. 
2. The input must be DC-DC, unable to use AC 220V to directly supply electricity, or else the module will also be burnt. 
3. Although electric converter has input reverse polarity protection and output short-circuit protection, 
you must be in strict accordance with connection description to connect. 
If you connect power supply to the output terminal, this module may be burnt.