SW-040020A SURE POWER Supply

Review SURE POWER Supply Model 4v 200ma

Introducing the Sure Power SW-040020A, a versatile and reliable 4V DC power supply designed to meet the power needs of various electronic devices. This power supply unit (PSU) delivers a steady and consistent output of 4 volts with a maximum current of 200 milliamperes (mA).

The SW-040020A is housed in a compact and robust aluminum enclosure measuring 6.0 inches (15.2 cm) long, 3.1 inches (7.9 cm) wide, and 1.4 inches (3.5 cm) high. Its size makes it an ideal choice for use in both desktop and portable applications. The unit's fan-assisted cooling system ensures that it operates efficiently and stays cool under heavy loads.

The power supply features a center-positive 5.5mm x 2.1mm DC output connector, which is commonly used in various electronic devices. It also includes an IEC C7 power cord for easy connection to a standard power outlet. The SW-040020A is designed to meet the international safety standards, including UL, CE, and FCC.

The power supply's output voltage and current can be adjusted using the front-mounted potentiometers. The voltage adjustment range is from 2.5V to 5.5V, while the current adjustment range is from 5mA to 200mA. This feature enables users to customize the power supply output to match the specific requirements of their devices.

The SW-040020A offers short-circuit, over-voltage, and over-current protection, ensuring safe operation and preventing damage to connected devices. The unit also includes a power indicator LED, which turns on when the power supply is in operation and provides visual confirmation of the power output.

The power supply's high-quality components and robust construction make it a reliable solution for powering various electronic devices, including but not limited to, hobby projects, laboratory equipment, test instruments, and educational kits. With its adjustable output, safety features, and compact size, the Sure Power SW-040020A is an essential tool for any electronics enthusiast or professional.

The Sure-Power SW-040020A is a 4V, 200mA DC power supply designed for various applications. Here are some potential pros and cons of purchasing this power supply:

1. Adjustable output voltage: The power supply can be adjusted from 1.5V to 4V, making it versatile for use with different devices.

2. Small and portable: With dimensions of 3.6 x 2.2 x 1.1 inches and a weight of 6.4 ounces, the SW-040020A is compact and easy to carry.

3. Short circuit protection: The power supply is designed with short circuit protection to prevent damage to the device or the power supply.

4. Overload protection: The power supply shuts off automatically when the load exceeds the maximum capacity, ensuring safety.

5. Affordable: Compared to some other power supplies, the SW-040020A is relatively inexpensive.

1. Limited current capacity: The power supply can deliver a maximum current of 200mA, which may not be sufficient for high-power applications.

2. No AC adapter: The power supply requires a DC input of 12V to 18V, so an external power source or an AC/DC adapter is necessary.

3. Lack of advanced features: The SW-040020A does not have advanced features such as overvoltage protection or remote on/off control.

In conclusion, the Sure-Power SW-040020A is a compact, affordable, and adjustable DC power supply that is suitable for low-power applications. However, it may not be suitable for high-power applications due to its limited current capacity. Additionally, the lack of advanced features and the requirement for an external power source may be drawbacks for some users.

Based on the information provided, I would recommend the SW-040020A for users who require a low-power, portable, and adjustable DC power supply for projects or hobbies. However, if you need a power supply with a higher current capacity or advanced features, you may want to consider other options.

Details:

Shipped with USPS ground advantage. Condition is used. Sure-Power supply model SW-040020A 4v 200ma.

specifications adaptmulti:

• brand: Sure Power
• mpn: Sw-040020a
• type: Power Supply
• features: Powered
• output voltage: 4 V

payments adaptmulti:

• other
• wallet: google-pay
• credit card: discover

shipping adaptmulti:

• carrier: usps
• transit: 5-12 days
• class: standard
• service: usps ground advantage
• type: fixed

returns adaptmulti:

• paid by: seller
• policy: returns accepted
• method: money back
• time: 30 days

general adaptmulti:

• category: Electronics > Batteries Power > Multipurpose Ac To Dc Adapters

seller adaptmulti:

• city: darby, pennsylvania
• rating: 99.5%
• # reviews: 2089

offer adaptmulti:

• price: $18.85
• item condition: Used
• options: ship-to-home
• started: november 29, 2025
• sold #: 15
• best offers: true
• availability: in stock
• in stock #: 1