Uses:

Perfect for use in academia, product design, labs, institutions, on-the-go computer repair, etc.
The safety and dependability of the product is ensured by the high degree of accuracy and skill used in its manufacture.
The output voltage of this DC power supply is fully adjustable between 0 and 30 volts, and the output current is varied between 0 and 5 amperes.
Features great dependability, minimal noise, and protection against circuit overload.

Note to Readers:

The back button needs to be set to the right voltage for optimal performance, or else the machine could be damaged. We are not liable for any consequences arising from the misuse of our services.
The standard in the United States is 110V, while actual usage is determined by the market.
When utilizing, be careful not to create a negative spark at the output terminal, which can happen if the contact is broken for for a moment.

Caution: 

Before using the DC regulated power supply, please familiarize yourself with the user handbook.
The power supply must be turned on before any load is connected to it. Similarly, if you are turning off the electricity, be sure the load is off first. Neglecting to do so may result in power grid disruptions. Any such losses are not covered by the guarantee.
A magnetic coil, DC motor, stepper motor, etc. are all examples of inductive loads. If you have an inductive load attached, you should only make gradual adjustments to the voltage/current and never turn the power supply off completely.

Features:

Slim and lightweight, functional, and user-friendly
Alternating automatically between voltage and current stabilization
Its ripple voltage is relatively low.
Voltage and current output are displayed on an LED screen.
Widely used in many applications, with selectable over-current protection
The adaptable layout may accommodate a wide range of needs.
Four individual potentiometers regulate the device's voltage and current.
Accuracy and steadiness at an exceptionally high level
Safety from overloading, current, and short circuits

Specifications:

Model: QW-MS305D
Rate Output: 0?30V,0?5A
Dimensions: (10.15 x 4.96 x 6.18)" / (25.8 x 12.6 x 15.7)cm(L x W x H)
Weight: 65.05oz
Display: Dual LED Display
Adjustable: Yes
Plug: US Standard
Safety Compliance: CCC/ FCC / CE

Stable Voltage:

The output voltage is between 0 and nominal value continuously adjustable
Voltage Stability: ?0.01% +3mV
Load Stability: ? 0.01% +3mV
Recovery Time: ?100?S
Ripple Noise: ?1 MVRMS(RMS)
Temperature Coefficient: ? 300PPM/°C

Rate Operating Condition:

Input Voltage:  110V±10%,47?63Hz (220V voltage is not allowed!)
Working Conditions: -10??40?
Storage Conditions: -20??80?
Working Relative Humidity: ?80%
Storage Relative Humidity: ?80% 

Output Technical Parameters:

Power Effection: CV?0.05%+1mV,CC?0.05%+10mA
Load Effection: CV?0.1%+5mV,CC?0.1%+10mA
Ripples & Noises: CV?10mV(RMS),CC?20mA(RMS)

Package Includes:

1 x DC Power Supply
1 x Power Line
2 x Clip Test Line
1 x User Manual