Product Description
(1)Adjust the right button so that"OUT"LED lighted,Digital meter shows the value of output voltage ,adjust the"voltage potentiometer"so that the outputvoltage reaches the value you want.
(2)Adjust the right button so that Digital meter showsthe value of output current;Wire shorted output terminal, then adjust the"current potentiometer"sothat the output current reaches a predeterminedovercurrent protection value.(For example, the Digital meter displays the current value of 4A, thenyou can use the module to a maximum current of 4A).
(3)Connected to the load.

2.Use as a battery charger.Usage:
(1)Make sure you need to charge the battery floatvoltage and charging current; (if lithium parameters3.7V/2200mAh, then the float voltage is 4.2V, themaximum charging current 1C, ie 2200mA).(2)Under no-load conditions, adjust the"Voltage potentiometer"so that the output voltage reaches thefloat voltage; (if to 3.7V rechargeable lithium battery,the output voltage can be adjusted to 4.2V).
(3)Adjust the right button so that Digital meter showsthe value of output current;Wire shorted output terminal, then adjust the" current potentiometer"sothat the output current reaches a predeterminedCharging current value.
(4)Charge turn lamp current factory default is 0.1times the charging current; (Battery during chargingcurrent is gradually reduced, if the charge current setting is 1A, then when the charge current is less than0.1A, blue lights turned off, the green light is on, whichmeans that the battery is fullycharged).
(5)connected to the battery charge.
(1,2,3,4 steps as: Output is unloaded, do not connectthe battery).

3.Use as a LED constant current driver module.Usage:
(1)Adjust the"voltage potentiometer"so that theoutput voltage reaches the value you want.
(2)Adjust the right button so that Digital meter showsthe value of output current;Wire shorted outputterminal, then adjust the"current potentiometer"sothat the output current reaches a predetermined LEDoperating current.
(3)Connect LED, work.
(1,2 steps as: Output is unloaded, do not connect LED).

Correction Method
Module with manual calibration function can correctdisplay precision voltage and current, if you think thecurrent voltage and current accuracy to meet the requirements, do not perform the following operations.
(1) Output voltage calibration steps 
step 1,adjust the right button so that"OWTRLEPlighted, Digital metershows the value oft oatputvoltage; Press the right button for more than 2 seconds,release,Digital meterand"OUT"LED flashesin synchronization so that you enter the output voltage calibration mode.
Step 2, press the right button (normal speed), the voltage value is adding up a unit; Press the left button,minus a unit; Due to a unit is less than 0.1v,the minimum voltage display to 0.1V, so you need tocontinuously press 1-5 times to see the voltmeterchange 0.1V, how many times voltmeter change 0.1V by pressing the key, depending on the current display voltage, the higher the voltage,the fewerthenumber of press.
Step 3, press the right button for more than 2 seconds,release, to exit the output voltage calibration mode.All parameters set to automatically power down tosave.
(2) Input voltage calibration steps
Step 1, adjust the right button so that"IN"LED lighted,Digital meter shows the value of input voltage; press the right button for more than 2 seconds, release,Digital meter and"IN"LED flashes in synchronization so that you enter the input voltage calibration moae.Steps 2 and 3, consistent with the output voltage calibration method.
(3)Output current calibration steps
Step 1, adjust the right button so that Digital metershows the value of output Current.Press the right button for more than 2 seconds, release, Digital meterflashes in synchronization so that you enterthe output current calibration mode.
Step 2,Connected to the load, ammeter in series,adjust the right and left button to change the displayof digital meter, so that is consistent with the ammeter display .


1,Because the model is more, we can not provide a picture of all models, if you need pictures, please contact us!
2,If you need more quantity, please contact us, we will increase the inventory and give you a better discount.
3,About transportation and timeliness.
1),United States, Canada, Ireland, Germany, France, Greece, Italy, Spain, Australia, United Kingdom, shipped through SpeedPAK Standard, with a transportation time limit of 15-25 days.
2),For Economic Shipping, the average transportation time is 25-30 days.
3),Japan delivers goods through China Epacket, and the time limit for transportation is 25 days to 30 days.
4),International Tracked Postage is delivered through DHL or FedEx, and the transportation time is 7-10 days.