4 Pin Push Button Tactile Switch 12x12x15mm (Pack of 5) The 4 Pin Push Button Tactile Switch (12x12x15mm) is a dependable component designed for precise input control in electronic circuits. Its tall 15mm profile ensures comfortable actuation, while the tactile switch 4 pin configuration provides firm electrical and mechanical stability. Ideal for control panels, embedded systems, and industrial electronics, this push button switch offers consistent tactile feedback even in high-frequency switching applications. Its through-hole mounting design ensures durability and reliable performance, making it a must-have for hobbyists and professionals alike. Features: Extended Height: 15mm actuator for easy access and firm tactile feedback. Standard 4-pin design. Compatible with typical PCB layouts. THT Mounting Through-hole legs for a stronger and more durable board attachment. Voltage Rating: 12V DC (standard) Current Handling Suitable for 50 mA to 100 mA low-current circuits. Applications: OEM product development Industrial control panels Prototyping and testing equipment Consumer electronics having enlarged switch housings

4 Pin Push in Conductor The 4 Pin lever nuts connector is designed with a rated voltage of 400V and an impulse voltage of 4KV. The 4 pin lever nuts compact connector is manufactured with a modified nylon (PA66) and phosphor copper is used as a contact material.

4 Pin Tactile Push Button Switch 12X12X21mm (Pack of 5) The 12x12x21mm tactile switch 4 pin is a high-quality tactile push button switch designed for precision and reliability in various control systems. Its extended stem enhances accessibility, making it suitable for recessed panels or enclosed assemblies. Featuring a 4-pin through-hole design and momentary tactile actuation, this switch provides consistent feedback and dependable operation. Commonly used in OEM assemblies, automation setups, and test rigs, it’s an excellent choice for engineers and hobbyists building custom industrial or electronic projects. Features: 21mm actuator height allows for easy operation in deep or enclosed installations. Standard 12x12mm base. Compatible with standard PCB and control panel configurations. 4-Pin THT Design Offers Solid Solder Joints for Mechanical Stability Momentary Tactile Feedback Ideal for push applications with a short response time. Voltage and Current Rating Operates @ 12V DC, up to 100mA Applications: OEM appliance controls. Testing and calibration equipment Audio and visual hardware interfaces Control consoles and automation panels Prototyping and embedded system development.

4 Power Indicator Battery Detection Module A Power Indicator Battery Detection Module is a gadget that detects the charge level in a battery and displays the remaining power level to the user. It often contains a voltage divider circuit that can convert the battery voltage to a level that a microcontroller or other device can read, as well as an indicator circuit that may display the remaining power level using LEDs or other visual means. The Power Indication Battery Detection Sensor Module you indicated most likely has four LEDs or other indicator lights to indicate different degrees of remaining power, such as a green LED for full power, a yellow LED for medium power, and a red LED for low power. Onboard high precision voltage detection chip and power supply voltage chip.Four onboard battery indicator light-emitting diodes (leds). T hree kinds of color display, red, yellow, green, representing 20%, 50%, 80%, 100% of the battery. Set aside all the batteries testing interface and the two positioning hole. By Removing the LEDs and extending their connections to arduino, this module can also be used with all arduino boards. PCB Size: 22.2(mm)x17.2.(mm)

4 Start T Type Copper Nut - 2mm Pitch The 4 start T type copper nut is specifically designed for RepRap 3D printers and other CNC machinery. The 2mm pitch copper nit for 3D printers has a compact design and weighs less than 50grams. It is best compatible with scree rod and together they work as axes in 3D printers. Feature of 4 Start Copper Nut Material Copper Pitch 2mm Lead 8mm Screw Type 4 Start T Type Nut Dimensions 5 x 4 x 3cms Weight 25 grams

4 Way Slide Switch 2.54mm Pitch (Pack of 2) 4 Way DIP switches for reliable operation by secure snap-in.  DIP Switch Used on a printed circuit board along with other electronic components and is commonly used to customize the behavior of an electronic device for specific situations. Widely used in data processing, communication, remote control and anti-theft alarm system need to manually automatic programming products. 4 position or 4 in 1, Dual In-Line Package (DIP) SPDT slide switch, namely the more traditional toggle switch is a set of electrical switches which is packed in a small box or housing. This DIP single pole double throw (SPDT) switch forces the operator to choose between connecting to either one of two terminals as such the switch will remain connected to one or the other, and the two terminals will never be connected. This switch is designed to be easily mounted on printed circuit boards to provide various ranges of input to the electronic device. You can easily control the input by using the DIP switch. Applications: Widely used in circuit boards, breadboards and All PCB Projects, Perfect as a toggle or on off switch for your projects.

4 Wheel Drive Gray Chassis with Castor Wheel Slot This is the 4 Wheel Drive Gray Chassis, It can either be used in skid steel configuration (4 motors) or differential configuration (2 rear wheels + 1 front castor wheel). The body contains perforated holes for easy mounting of various size circuit boards and other mechanical components. This Chassis board is widely used as a mechanical frame structure of the mobile robots. It is the backbone of the robot, where we arrange and connect everything like motors , sensors , and wheels . It gives you the base to build our robot and allow you place your components according to requirements. check out : Black Metal Chassis Applications: Robot car Obstacle avoiding car Line follower robot

4 x 1.5V AA battery holder with cover and On/Off Switch This 4 x AA 1.5V battery holder case is ideal for projects that require a 3V external battery. It is designed to hold 4 AA batteries, which are connected in series to provide a combined output of 3V. The holder features a plastic cover that can be locked to protect the battery cells from environmental factors. A removable sliding cover is also included, which is secured by a small head screw. The leads are approximately 15cm in length, with the last 5mm tinned for easy soldering and connection. An on/off switch is built into the battery holder case, which allows for easy control of power to your project. This battery case is designed to keep your batteries organized and protected. Key Features: Holds four AA batteries. Easy to install and use. Durable plastic construction. Includes ON/OFF switch.

4-bit Bi-directional Shift Register IC - 74HC194 The 74HC Series 74HC194 bidirectional shift register is designed to incorporate virtually all of the features a system designer may want in a shift register; they feature parallel inputs, parallel outputs, right-shift, and left-shift serial inputs, operating-mode-control inputs, and a direct overriding clear line. The register has four distinct modes of operation, namely: Parallel (broadside) load Shift right (in the direction QA toward QD) Shift left (in the direction QD toward QA) Inhibit clock (do nothing) Synchronous parallel loading is accomplished by applying the four bits of data and taking both mode control inputs, S0 and S1, HIGH. The data is loaded into the associated flip-flops and appears at the outputs after the positive transition of the clock input. During loading, serial data flow is inhibited. Shift right is accomplished synchronously with the rising edge of the clock pulse when S0 is HIGH and S1 is LOW. Serial data for this mode is entered at the shift-right data input. When S0 is LOW and S1 is HIGH, data shifts left synchronously and new data is entered at the shift-left serial input. Clocking of the flip-flop is inhibited when both mode control inputs are LOW. check out : 4-Line to 16-Line Decoder/Demultiplexer IC - 74HC154 Pinout: Pinout Of 74HC194 IC

4-Bit Binary Ripple Counter IC - 74HC93 The 74HC93 are high-speed Si-gate CMOS devices and are pin-compatible with low-power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC Series 74HC93 are 4-bit binary ripple counters. The devices consist of four master-slave flip-flops internally connected to provide a divide-by-two section and a divide-by-eight section. Each section has a separate clock input (CP0 and CP1) to initiate state changes of the counter on the HIGH-to-LOW clock transition. State changes in the Qn outputs do not occur simultaneously because of internal ripple delays. Therefore, decoded output signals are subject to decoding spikes and should not be used for clocks or strobes. check out : 4 Bit Bi-Stable Latch IC - 74HC75 A gated AND asynchronous master reset (MR1 and MR2) is provided which overrides both clocks and resets (clears) all flip-flops. Since the output from the divide-by-two section is not internally connected to the succeeding stages, the device may be operated in various counting modes. In a 4-bit ripple counter, the output Q0 must be connected externally to input CP1. The input count pulses are applied to clock input CP0. Simultaneous frequency divisions of 2, 4, 8, and 16 are performed at the Q0, Q1, Q2, and Q3 outputs as shown in the function table. As a 3-bit ripple counter, the input count pulses are applied to input CP1. Simultaneous frequency divisions of 2, 4, and 8 are available at the Q1, Q2, and Q3 outputs. Independent use of the first flip-flop is available if the reset function coincides with the reset of the 3-bit ripple-through counter. check out : 16-Channel Analog Multiplexer/Demultiplexer IC - CD4067 Pinout: Pinout Of 74HC93 IC