Step-Down LED Driver Module is available now from our US and UK warehouse Free shipping to US and UK in 3-6 business days ship to Canada， Brazil in 7-10 days in US warehouse ship to European countries in 7-10 days in UK warehouse B3603 DC LED Digital Controlled Step Down Driver Power Module Constant Current Voltage Feature: OUT， CV and CC indicator light Digital display， convenient and easy to use Constant voltage and constant current state One key to save voltage and current value Adjust output voltage and current value accurately 10 groups of storage location， free storage and bring up Automatic\/manual switch voltage， current， power， capacity and other parameters display It can be set whether automatically output or not after electrify It can be set whether take turns to show voltage， current， power and capacity or not after output Specification: Input voltage: 6V ~ 40V Output voltage: 0V ~ 36V Output current: 0A ~ 3A Conversion efficiency: up to 92% The output ripple: !#!amp!*!le;50mV Working temperature: -40 C ~ +85 C Working frequency: 150KHz Short circuit protection: constant current Voltage regulation\/display resolution: 0.01V Current regulation\/display resolution: 0.001A The minimum display resolution of power: 0.001W The minimum display resolution of capacity: 0.001AH Input reverse connect protection: no， if necessary please install diode Connection mode: terminals Size: 66 x 50 x 21mm Weight: 44g Usage: This module has two kinds of usage: one is simple usage，another is fully functional usage. Simple usage: 1. Properly connect input，output，and guarantee the input voltage in the range of requirements.It is forbidden to reverse connection， or it will be burn out. 2. Setting the voltage and current value，the setting method as follows: After electrify， the LED default display the voltage value，the format of voltage display is !#!amp!*!quot;00.00!#!amp!*!quot;， press !#!amp!*!quot;SET!#!amp!*!quot; button to switch to the current value，the format of current value display is !#!amp!*!quot;0.000!#!amp!*!quot;. Press the button increase the value ，press the button reduce the value， short press the button can accurate regulation， long press the button can quickly regulate.If the voltage or current value has been changed， press the !#!amp!*!quot;SET!#!amp!*!quot; button the LED display the !#!amp!*!quot;----!#!amp!*!quot;said that the voltage or the current has been saved . If there is no change of voltage or current value， press !#!amp!*!quot;SET!#!amp!*!quot; key to switch to the current or voltage value. 3. After finish setting， press the !#!amp!*!quot;OK!#!amp!*!quot; button to output. 4. In the output state， press the button can increase the output voltage value and press the button can reduce the output voltage value when the LED display the voltage value，press the button can increase the current value and press the button can reduce the current value when the LED display the current value，short press the button can ac