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We offer a 30-day price guarantee: if the price of your purchased item drops within 30 days, we will refund the price difference.
The KUAIQU SPPS-C305 Adjustable DC Power Supply is a compact and easy-to-use bench power supply designed for Arduino, Raspberry Pi, ESP32, and other embedded electronics prototyping projects.
Whether you are powering a new development board, testing sensors and modules, debugging circuits, or evaluating power consumption, the SPPS-C305 provides precise voltage/current adjustment and clear real-time readings in a compact desktop design.
From your first breadboard prototype to embedded system debugging, the SPPS-C305 provides a convenient power source for development work.
Arduino prototyping and circuit development
Raspberry Pi development and peripheral testing
ESP32 / ESP8266 IoT prototyping
Sensor and module testing
Breadboard circuit development
Microcontroller power testing
LED and small electronic device testing
Embedded electronics debugging
DIY electronics projects and STEM education
The SPPS-C305 uses dual-knob encoders for smooth and precise parameter adjustment.
The intuitive control design makes it easy to quickly set the required voltage and current during prototyping, testing, and debugging.
Dual-knob encoder control
Smooth and precise adjustment
Adjustable voltage and current output
Suitable for repeated testing and development work
A 4-digit LED display provides clear numerical readings, allowing you to monitor the power supplied to your prototype in real time.
The display provides information including:
Voltage
Current
Power
This makes it easier to observe changes in power consumption while testing Arduino boards, Raspberry Pi peripherals, ESP32 modules, sensors, and other electronic circuits.
The SPPS-C305 features independent Power and Output switches.
The output switch allows you to turn the DC output on or off without repeatedly adjusting the power supply settings.
This is especially convenient when:
Connecting or replacing development boards
Testing different prototype circuits
Debugging wiring or components
Repeatedly powering electronic modules
Designed with high power density, the SPPS-C305 delivers useful bench power capability without taking up unnecessary workspace.
Its compact and lightweight design makes it suitable for:
Electronics workbenches
Maker spaces
Engineering labs
School laboratories
Portable development setups
DIY electronics workstations
In addition to the main adjustable DC output, the SPPS-C305 provides a 5V / 2A USB output for powering compatible USB devices and development accessories.
This can be useful when working with development boards, USB-powered modules, sensors, and other low-voltage accessories.
A temperature-controlled fan automatically adjusts cooling according to the operating condition.
This helps maintain reliable operation while reducing unnecessary fan noise during lighter workloads.
Combined with a low-noise design, the SPPS-C305 is suitable for longer development and testing sessions.
The SPPS-C305 is designed to support the complete prototyping workflow:
Power → Prototype → Test → Debug → Refine
Use it to provide controlled power to your development board, monitor current consumption, test different operating conditions, and troubleshoot your circuit during development.
Arduino Projects
Power Arduino boards, sensors, motors, displays, communication modules, and other peripherals during prototype development and testing.
Raspberry Pi Development
Provide a controlled power source for Raspberry Pi projects and test connected peripherals, modules, and custom circuits.
ESP32 / IoT Prototyping
Ideal for ESP32-based IoT projects involving sensors, wireless modules, displays, relays, and other external components.
Embedded Circuit Debugging
Monitor voltage, current, and power while testing prototype boards and troubleshooting unexpected power consumption.
The SPPS-C305 is designed for reliable everyday use in electronics development and testing.
CE certified
ISO 9001 certified
Temperature-controlled cooling
Low-noise operation
Long service life design
Compact. Precise. Practical.
The SPPS-C305 combines precise adjustment, real-time power monitoring, convenient output control, USB power, and compact high-density construction in one bench power supply.
It is a practical choice for Arduino makers, Raspberry Pi developers, ESP32/IoT engineers, electronics students, hobbyists, and embedded system developers who need controlled and adjustable power during prototyping and debugging.
30-Day return and refund guarantee (Refer to our Refund Policy), 2-year warranty (only available for orders purchased directly from kuaiquinstrument.com), lifetime technique support by KUAIQU.
Please feel free to reach us with any concerns:
Email: kuaiquinstrument@163.com
We strive to reply to you within 24 hours.
Shenzhen Kuaiqu Electronic Co., Ltd. was founded in 2014 and is located in Shenzhen City, Guangdong Province. It is a scientific and technological enterprise integrating,production and sales. Specializing in the production of DC stabilized power supply, variable frequency power supply, switching power supply, program-controlled power supply and other 100 kinds of measuring teaching instruments and industrial special equipment.
We are committed to delivering premium products and exceptional customer service, striving to be your most reliable and intelligent assistant.
At KUAIQU, we are committed to providing our customers with the best value for their purchases. To ensure you always get the best price, we offer a 30-day price guarantee on all products purchased directly from kuaiquinstrument.com. This policy aims to give you confidence and peace of mind when shopping with us.
Our 30-day price guarantee means that if you purchase a product from kuaiquinstrument.com and the price of that product drops within 30 days of your purchase date, you are eligible for a refund of the price difference of the products. (Prices are based on USD. No refunds will be given for price changes in other currencies due to exchange rate fluctuations.)
If you notice that the price of a product you purchased from kuaiquinstrument.com has dropped within 30 days, follow these steps to apply for a refund of the price difference:
At KUAIQU, we strive to provide our customers with high-quality products and exceptional customer service. Our 30-day price guarantee is just one of the ways we ensure you get the best value for your investment. Shop confidently with KUAIQU, knowing that you are always getting the best deal available.
Thank you for choosing KUAIQU. If you have any questions or need further assistance, please do not hesitate to contact our customer support team at kuaiquinstrument@163.com.
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