The 4N35 is a high-performance optocoupler (opto-isolator) with a phototransistor output, designed for signal isolation, noise reduction, and interfacing between high-voltage and low-voltage circuits. It is widely used in microcontroller applications, industrial control systems, power electronics, and signal isolation circuits.

The SN74HC595N is an 8-bit serial-in, parallel-out shift register with a storage register and 3-state outputs, housed in a DIP-16 package. It is widely used in microcontroller applications, LED matrix displays, digital circuits, and expanding GPIO pins for Arduino, Raspberry Pi, ESP32, and other embedded systems.

The 1mm Micro PCB Drill Bit is a high-precision drill bit designed for drilling small holes in PCBs (Printed Circuit Boards), plastics, soft metals, and other delicate materials. Made from tungsten carbide or high-speed steel (HSS), this drill bit ensures sharpness, durability, and accuracy, making it ideal for electronics prototyping, DIY projects, and professional PCB manufacturing.

The Micro Push Button Switch (4 Pin, DIP) is a compact, momentary tactile switch commonly used in electronics projects, prototyping, and embedded systems. It provides a tactile feedback click when pressed and is normally open (NO) until activated. With a DIP (Dual In-line Package) 4-pin design, it is easy to solder onto PCBs or use on breadboards for prototyping.

The DC 5V Active Mini Buzzer is a small yet powerful electronic sounder designed to operate at 5V DC. It produces a continuous buzzing sound when powered, making it ideal for alarms, notifications, and warning systems. This buzzer is pre-driven (active type), meaning it does not require an external oscillator or signal to function—simply apply power, and it will start buzzing.

The SIM800L V2.0 5V GSM GPRS module is an upgraded version of the popular SIM800L, designed to work directly with 5V logic without requiring voltage level shifting. It enables SMS messaging, voice calls, and GPRS data connectivity, making it ideal for IoT applications, remote monitoring, and automation projects. The module comes with an antenna for better signal reception and is compatible with Arduino, ESP32, Raspberry Pi, and other microcontrollers.

The SIM800L GSM GPRS module is a compact and reliable quad-band communication module that enables devices to send and receive SMS, make voice calls, and connect to the internet via GPRS. Ideal for IoT applications, remote monitoring, home automation, and tracking systems, this module is compatible with Arduino, ESP32, Raspberry Pi, and other microcontrollers.

The MPU-6050 is a high-precision 3-axis accelerometer and 3-axis gyroscope module, ideal for a wide range of motion-sensing applications. Perfect for projects that require motion tracking, orientation sensing, or gesture recognition, this module is a must-have for robotics, wearables, drone projects, and more. With built-in digital motion processing (DMP), it offers high accuracy and low power consumption for reliable sensor data in real-time.

The SG90 Micro Servo Motor is a compact, high-performance servo motor designed for a wide range of robotics and DIY electronics projects. Its small size and precise control make it ideal for applications like RC cars, robotics, and automation systems. Offering great torque and smooth movement, it’s a popular choice among electronics hobbyists, students, and engineers.

The 830 Points Solderless Breadboard is a high-quality prototyping tool that offers a larger workspace for creating complex circuits. With 830 tie points, it is perfect for advanced electronics projects, DIY experiments, and educational purposes. This solderless breadboard allows for easy assembly and testing of circuits without the need for soldering, making it ideal for both beginners and experienced engineers.

The 400 Points Solderless Breadboard is an essential prototyping tool for electronics enthusiasts, students, and engineers. It provides a quick and easy way to design and test circuits without the need for soldering. Ideal for breadboarding microcontroller projects, sensors, and other small circuit designs, this compact breadboard offers 400 tie points for temporary circuit connections.

The 12VDC Normally Closed (N/C) Solenoid Valve is designed for automatic control of liquid flow, making it ideal for water dispensing, irrigation systems, and industrial automation. This electromagnetic valve remains closed when unpowered and opens when 12VDC is applied, allowing efficient control of fluid flow.

The 5.1KΩ (5100 Ohm) 1/4W Resistor is a high-quality, through-hole carbon film resistor, commonly used in voltage dividers, current limiting, pull-up/pull-down circuits, and signal processing. With a ±5% tolerance, it provides stable and reliable performance, making it an essential component for electronics projects, circuit prototyping, and industrial applications.

The 10Ω (10 Ohm) 1/4W Resistor is a high-quality, through-hole carbon film resistor, commonly used for current limiting, voltage regulation, signal conditioning, and general electronic circuits. With a ±5% tolerance, it provides stable and reliable performance, making it essential for DIY electronics, circuit prototyping, and professional applications.

The 100Ω (100 Ohm) 1/4W Resistor is a high-quality, through-hole carbon film resistor, commonly used in current limiting, LED protection, signal conditioning, and general electronic circuits. With a ±5% tolerance, it provides stable and reliable performance, making it a fundamental component for DIY projects, circuit prototyping, and professional electronic designs.

The 10KΩ (10,000 Ohm) 1/4W Resistor is a high-precision, through-hole carbon film resistor designed for voltage dividers, signal processing, pull-up/pull-down circuits, and general electronic applications. With a ±5% tolerance, this resistor offers stable and reliable performance, making it essential for DIY projects, circuit prototyping, and professional electronic designs.

The 100KΩ (100,000 Ohm) 1/4W Resistor is a precision through-hole resistor with a tolerance of ±5%, ideal for signal conditioning, voltage dividers, pull-up/pull-down circuits, and general electronics applications. Made from carbon film material, this resistor ensures low noise and stable performance in both DIY and professional electronic circuits.

The 1MΩ (1 Mega Ohm) 1/4W Resistor is a precision through-hole resistor with a tolerance of ±5%, ideal for electronic circuits, signal conditioning, and voltage dividers. Designed for low-power applications, this carbon film resistor offers stable performance and high reliability.

The HC-SR501 PIR Motion Sensor Module is a passive infrared sensor designed for human body motion detection. It detects infrared radiation emitted by moving objects and triggers an output signal, making it ideal for security systems, automatic lighting, and motion-activated projects.

The 100x150mm Single-Sided Copper Clad PCB is a high-quality prototyping board designed for DIY electronics, circuit testing, and PCB fabrication. Featuring a pure copper layer, it allows for easy circuit etching, soldering, and custom PCB design, making it ideal for electronics hobbyists, engineers, and professionals.

The 3dBi Omni-Directional Antenna with SMA Male Connector is designed for 433MHz communication applications, including GSM, GPRS, LoRa, WiFi, and other wireless systems. It provides enhanced signal reception and transmission stability, making it ideal for IoT, remote monitoring, and industrial wireless applications.

The IR Infrared Obstacle Avoidance Sensor is a photoelectric switch module designed for proximity detection and obstacle avoidance in robotics and automation projects. It features an IR transmitting and receiving tube that detects objects by reflecting infrared light, making it ideal for robot navigation, object detection, and smart automation systems.

The 7x9 cm Single-Sided Veroboard is a high-quality prototyping board designed for DIY soldering, circuit prototyping, and electronic project development. Featuring pre-drilled holes and a copper strip layout, this board is ideal for custom PCB designs, testing circuits, and permanent soldered connections.

The YF-S201 Hall Effect Water Flow Sensor is a high-precision flowmeter designed to measure water flow rates from 1 to 30 liters per minute (L/min). With a durable plastic body, G1/2" (1/2 inch) inlet/outlet ports, and a Hall-effect sensor, this sensor provides accurate flow rate readings in water dispensing systems, industrial automation, and IoT applications.