Features:
When you use the product， the module inputs and outputs to be isolated from ground.
Use as a step-down modules with overcurrent protection capabilities
Usage:
(1)   adjust the “voltage potentiometer” so that the output voltage reaches the value you want.
(2)   use a multimeter to measure the output short-circuit current with 10A stalls， while regulating the “current potentiometer” so that the output current reaches a predetermined LED operating current.
(3)   Connect LED， work.
(1，2 steps as: Output is unloaded， do not connect LED)

Specifications:
High efficiency up to 96%
Built in thermal shutdown function
Built in current limit function
Built in output short protection function
Input reverse polarity protection: None (if required， high current diode in series with the input).
Length: 4.6cm
Wideth: 2.3cm
Net Weight: 15g

Package includes:
1x  LED Driver Adjustable Lithiumion Batteries Charging Module