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Long press "output enable" button to control usb output, USB power indicator lights up. Package content:2 x usb buck converter, 1 x 19. 6"awg wire. Widely use for car, ipad, electric bike, motorcycle for voltage measurement and to charge phone, Mp3 etc.

Make sure to use the devices which is below 10A. Wide application this power supply has variable application. It can be used as a 5v 12v 24v 30v 36v 48v power supply for RV, Computer, Labtop, Lab, Car, CCTV, etc.
Protection over load protection, short circuit protection, before using, which can protect your device from damage. It can be used to device of 2A 3A 5A 10A. Note: the default input voltage is 220v, Over Voltage Protection, please switching the input voltage to 110V/220V according to your city voltage. The potentiometer is inset into the supply. This supply is suitable for 5v 9v 12v 24v 30v 36v 48v devices. Volt adjustment input voltage can be 110v or 220v.

You can clamp to the two cylindrical contacts directly. Perfect choice to power led strips, CCTV camera, car stereos, over heat protection. As for model 12v 10a-60a 120w-600w, 30a 360W, power 600W. For motor device, such like 40A rated leds will also be OK.
It does not mean it can fit rate power 600W. Dial to the correct gear position, over current protection, and other 12V powered systems. Super convenient for devices with clamps. Dual input voltage: ac 110v-120v / 220v-240v. Wide voltage input adjusted automatically to smps model 12v 1a-5a, there is a voltage selector switch located on the side of the switcher is used to set the input voltage to the power supply to either 110V/120V or 220V/230V.


Perfect for electronic hobby project, LED display, wide application, Car Audio, you can use it on radio, motor, cell phone, etc. With reversed-connection protection, over-current protection, over-heating protection and over-voltage protection, hence is safe to use.

5v-32v; max output current 5A, recommend use of within 4. 5a; max output power 75W, recommend use of within 50W. General use - as ordinary step-down module with over-current protection; As constant current LED driver module; DIY a solar power controller, etc.
Note - 1. 2. You can find the pdf instructions on this page -- Product information -- Product guides and documents -- User Manual PDF. Output voltage is set as around 20v by default, please turn potentiometer anticlockwise for 10 laps or more until voltage changes. Display - large clear digital LCD display voltage & current value simultaneously. The case is packaged unassembled to avoid damage during transit.

We focus on providing reliable tools. You can save money on the battery and charger if you already have them before. Contact us first if there is any question about the product.
Mellif voltage converters built in over low voltage protection, auto shut off if the battery voltage is lower than 14. 4v, protect your 12V devices from over power. Max output current 12V/15A. High quality material & safe to use: the voltage regulator is made of high quality chip and high quality plastic, stable and safe. Guarantee and service: replacement available if any quality problem in 6months.


Easy to use: with terminal block, no soldering iron is also convenient to use, and retain the wire bond point the input voltage must be higher than the voltage to be output by 1v or more.
Product parameters: input voltage is 4. 0v - 40v, conversion efficiency 92% highest, output current is 2A normal and stable and 3A max, switching frequency 150KHz, output ripple under 30mv, output voltage is 1.25v - 37v, operating temperature is -45 to 85 degree Celsius.

1. DAOKI
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24AWG Wire, DAOKI 2 Pack DC-DC Buck Voltage Converter 6.5-40V to 5V 2A Step-Down USB Output Voltmeter Module Low Power Transformer with LED Display
#adDAOKI #ad - Input voltage/ voltmeter range: dc 4. 5-40v input 6. 5-40v voltage, output 5. 0v stable voltage. Self-calibration voltmeter, high precision.Long press "output enable" button to control usb output, USB power indicator lights up. Package content:2 x usb buck converter, 1 x 19. 6"awg wire. Widely use for car, ipad, electric bike, motorcycle for voltage measurement and to charge phone, Mp3 etc.
More information #ad
Long press "low power" button to enter into the low-power standby mode, voltmeter and USB output shut down. With reverse polarity protection, reverse polarity does not matter, over-current, over-temperature protection.Brand | DAOKI #ad |
Manufacturer | DAOKI #ad |
Weight | 0.22 Pounds |
Part Number | DR-US-289 |
Model | DR-US-289 |
More information #ad
2. DROK
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Adjustable Variable LED Adapter Regulated 5V 12V 24V 30V 36V 48V Volt Voltage Transformer 10A Amp Charger for Lab CCTV, DROK 48V Power Supply, AC 110V/220V to DC 0-48V 10A 480W Buck Converter
#adDROK #ad - Only to rotate the potentiometer can adjust output parameter. The voltage precision is 01v. During the running power is high, the cooling fan will automatically activate with little noise. Heat sink and cooling fan can control the temperature in a safe range.Make sure to use the devices which is below 10A. Wide application this power supply has variable application. It can be used as a 5v 12v 24v 30v 36v 48v power supply for RV, Computer, Labtop, Lab, Car, CCTV, etc.
More information #ad
All of our item has one year long time warranty guarantee. Easy operation this supply is no need to install, after connecting wire, it can be used to adjust output, which is convenient. But the actual current is depended on the load. Protection over load protection, short circuit protection, before using, which can protect your device from damage. It can be used to device of 2A 3A 5A 10A. Note: the default input voltage is 220v, Over Voltage Protection, please switching the input voltage to 110V/220V according to your city voltage. The potentiometer is inset into the supply. This supply is suitable for 5v 9v 12v 24v 30v 36v 48v devices. Volt adjustment input voltage can be 110v or 220v.
Brand | DROK #ad |
Manufacturer | DROK #ad |
Height | 1.97 Inches |
Length | 8.46 Inches |
Weight | 0 Pounds |
Width | 4.45 Inches |
Part Number | 200570 |
More information #ad
3. Anbull
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Anbull SMPS 110V AC to 12V DC Converter Power Supply Adapter Switch Transformer Max 50A 600W New Version
#adAnbull #ad - . Never pay for useless design. Safe and stable, long service life:switching power supply has over/under voltage, over heat protection and fan heat dissipation protection functions. Light and portable, Easy to Operate: Net weight only 1. 2 kg. It is a patent design.You can clamp to the two cylindrical contacts directly. Perfect choice to power led strips, CCTV camera, car stereos, over heat protection. As for model 12v 10a-60a 120w-600w, 30a 360W, power 600W. For motor device, such like 40A rated leds will also be OK.
More information #ad
If use resistive equipment, you can use higher power, 600W. Protect: over/under voltage protection, cut off the power before disassembling the connection. How to choose: the peak power is 50a, such like led strips, the start current will be much higher that rate power. It does not mean it can fit rate power 600W. Dial to the correct gear position, over current protection, and other 12V powered systems. Super convenient for devices with clamps. Dual input voltage: ac 110v-120v / 220v-240v. Wide voltage input adjusted automatically to smps model 12v 1a-5a, there is a voltage selector switch located on the side of the switcher is used to set the input voltage to the power supply to either 110V/120V or 220V/230V.
Brand | Anbull #ad |
Manufacturer | Ankul #ad |
Height | 1.88 Inches |
Length | 8.89 Inches |
Weight | 2 Pounds |
Width | 4.44 Inches |
Part Number | SP0047 |
Model | 12V600W |
More information #ad
4. SUPERNIGHT
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DC Automatic Buck Boost Converter DC 8V-40V to 13.8V 10A Step Down Up Voltage Regulator Waterproof Voltage Reducer for Golf Cart Club Car LED Strip Light
#adSUPERNIGHT #ad - Input voltage: 12v/24v/36v nominal, accept8v-40v range; Output Voltage: DC 13. 8v 10a 138w. Maximum efficiency:≥95%; ripple Wave: 50Mv; Starting delay time:≤2S. Compact aluminium shell with epoxy potting, anti-dust, 100% waterproof, anti-shock protection and better heat dissipation.More information #ad
Widely used to golf cart, photo-voltaic power, speaker, electric fan, DVD, air-conditioner, solar energy, motor, LED car display screen, gps, industrial equipment ect. Over-current /over-load /Low-load /Short-circuit /Over-heat intelligent protection.Brand | SUPERNIGHT #ad |
Manufacturer | SUPERNIGHT #ad |
Weight | 0.55 Pounds |
Part Number | 8V/40V-13.8V 10A |
Model | 8V/40V-13.8V 10A |
More information #ad
5. DROK
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DROK Waterproof DC Buck Converter Voltage Regulator 8-22V to 3-15V 5V 12V 3A Adjustable Output Power Supply Transformer Step-Down Volt Module Board for Car Auto Vehicle Motor Regulated SR
#adDROK #ad - Uses synchronous rectification technology, has high conversion efficiency and stable performance; The input should be at least 3V higher than output.Perfect for electronic hobby project, LED display, wide application, Car Audio, you can use it on radio, motor, cell phone, etc. With reversed-connection protection, over-current protection, over-heating protection and over-voltage protection, hence is safe to use.
More information #ad
With potentiometer on the bottom, which allows you adjust the accuracy with the mini screw, but ensures you won't easily change its setting when mounted. Fully sealed, anti-humidity and dust-proof, specially made to be waterproof, anti-shock, outer enclosure acts as a heat sink, more durable.Brand | DROK #ad |
Manufacturer | DROK #ad |
Height | 0.79 Inches |
Length | 1.3 Inches |
Weight | 0 Pounds |
Width | 0.98 Inches |
Part Number | 90010 |
Model | 090010 |
Warranty | 1 year |
More information #ad
6. DROK
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DC Buck Module, DROK Adjustable Buck Converter Step Down Voltage Regulator 6V-32V 30V 24V 12V to 1.5-32V 5V 5A LCD Power Supply Volt Reducer Transformer Module Board with USB Port Protective Case
#adDROK #ad - 3. Features - constant current/voltage mode; voltage calibration & current calibration; USB interface; Protective case; Short-circuit protection; Over-temperature protection; Input reverse connection protection. Parameter - input voltage range dc 6v-32v; output voltage dc 1.5v-32v; max output current 5A, recommend use of within 4. 5a; max output power 75W, recommend use of within 50W. General use - as ordinary step-down module with over-current protection; As constant current LED driver module; DIY a solar power controller, etc.
More information #ad
It needs to be manually installed. Please carefully read the user’s manual, if your input is lower than that, especially the “Cautions” before using. Note - 1. 2. You can find the pdf instructions on this page -- Product information -- Product guides and documents -- User Manual PDF. Output voltage is set as around 20v by default, please turn potentiometer anticlockwise for 10 laps or more until voltage changes. Display - large clear digital LCD display voltage & current value simultaneously. The case is packaged unassembled to avoid damage during transit.
Brand | DROK #ad |
Manufacturer | DROK #ad |
Weight | 0.15 Pounds |
Part Number | 180080AFA |
Model | 180080AFA |
More information #ad
7. Mellif
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Connector DIY Adapter Automatic Buck Boost Converter Regulator with Upgraded Low Voltage Protection, Step Down DC Voltage Converter for DeWalt 20V to 12V Battery Dock Power 180W Inverter
#adMellif #ad - Mellif voltage regulator provides over/under voltage input, overhead, overload, and short circuit full protection. Up to 95% power conversion efficiency: adopt synchronous rectification Technology to improve conversion efficiency, Maximum Efficiency:≥95%; Ripple Wave: 50Mv; Starting delay time:≤2S.We focus on providing reliable tools. You can save money on the battery and charger if you already have them before. Contact us first if there is any question about the product.
More information #ad
Widely application: power 180w, car truck, vehicle, dashcam, light, golf cart, led strip light, electric fan, monitoring system, screen, camera, widely used in motor, solar pad and DIY etc. Compatibility: mellif step down dc voltage converter works with DeWalt 20V MAX XR battery Battery NOT Included. Mellif voltage converters built in over low voltage protection, auto shut off if the battery voltage is lower than 14. 4v, protect your 12V devices from over power. Max output current 12V/15A. High quality material & safe to use: the voltage regulator is made of high quality chip and high quality plastic, stable and safe. Guarantee and service: replacement available if any quality problem in 6months.
Brand | Mellif #ad |
Manufacturer | Mellif #ad |
Height | 3.15 Inches |
Length | 4.33 Inches |
Weight | 0.15 Pounds |
Width | 3.15 Inches |
Model | DCB20-12v |
More information #ad
8. NiuGuy
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3D Printer,LED Driver, NiuGuy, 24V 15A Switching Power Supply Driver,360W Universal Regulated, Switching Converter, 110V/220V AC to DC 24V Low Voltage Transformer for CCTV,Radio,Computer Project
#adNiuGuy #ad - Stable constant voltage dc24v output: convert 120vac or 220VAC to DC24V, Rated Current-14. 6a, rated max Power-350W. Intelligent temprature control cooling fan:case temp>50℃ fAN ON, Case tempMore information #ad
Brand | NiuGuy #ad |
Manufacturer | aobotongda #ad |
Height | 1.1 Inches |
Length | 8.4 Inches |
Weight | 1.6 Pounds |
Width | 4.5 Inches |
Part Number | LRS350W-24 |
Model | LRS350W-24 |
Warranty | Non-artificial wiring damage, barrier-free use is greater than 20,000 hours |
More information #ad
9. Frienda
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4 Pieces Adjustable LM2596S DC-DC Buck Converter Reduced Voltage Regulator Power Module 36V 24V 12V to 5V 2A Voltage Stabilizer with Digital Voltmeter Display
#adFrienda #ad - Nice design: with 150khz internal oscillation frequency, and then use the module to adjust the voltage normally; This is because when the module leaves the factory, features low power consumption and high efficiency; When the output voltage cannot be adjusted and is always equal to the input voltage, please turn the potentiometer counterclockwise for more than 10 turns, the default output voltage is about 20V.Easy to use: with terminal block, no soldering iron is also convenient to use, and retain the wire bond point the input voltage must be higher than the voltage to be output by 1v or more.
More information #ad
Output current: the maximum output current can be as high as 3A, the recommended working current is about 2A, more than 2A plus heat sink. Simple to operate: the voltmeter can be turned off, once the voltmeter is turned off, and the switch can be turned off by pressing and holding the switch for more than 1 second and less than 4 seconds, simply press the switch to turn on the voltmeter. Product parameters: input voltage is 4. 0v - 40v, conversion efficiency 92% highest, output current is 2A normal and stable and 3A max, switching frequency 150KHz, output ripple under 30mv, output voltage is 1.25v - 37v, operating temperature is -45 to 85 degree Celsius.
Brand | Frienda #ad |
Manufacturer | Frienda #ad |
Weight | 0.2 Pounds |
Part Number | Frienda-Power Converters-01 |
More information #ad
10. CT Sounds
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Digital Voltmeter, Durable, Remote Gain Control, Blue LED Display, Pushable ON/Off for Amp, Power Switch, CT Sounds Universal Bass Knob
#adCT Sounds #ad - Compatible with Most Head Units/Amp Combinations. Digital voltmeter 10v~15. 9v blue led display High Voltage/ Low Voltage/ Protect Mode. In-dash/Under-dash mountable. Rotary pushable on/off & Gain Control Knob for Amp. Ct sounds universal Bass Knob with Digital Voltmeter.More information #ad
Brand | CT Sounds #ad |
Manufacturer | CT Sounds #ad |
Part Number | Universal Bass Knob |
Model | Universal Bass Knob |
More information #ad