4Pin KY-026 Flame Sensor Module This 4Pin Flame Sensor Module is used to detect fire/flame sources or other light sources of the wavelength in the range of 760nm 1100 nm. It is based on the YG1006 sensor which is a high speed and high sensitive NPN silicon phototransistor. Due to its black epoxy, the sensor is sensitive to infrared radiation. The sensor can be a great addition to a firefighting robot, it can be used as a robot's eye to find the fire source. When the sensor detects flame the Signal LED will light up and the D0 pin goes LOW. The module has 2 outputs: Analogue, which gives a real-time voltage output signal on thermal resistance, and digital which allows temperature thresholds to be set via a potentiometer.

1/4 Inch Brass Water Flow Sensor SEN-HZ41WC The SEN-HZ41WC water flow sensor is a device that is used to measure the flow rate of water. It consists of a turbine-type rotor that is placed in the water stream, and as the water flows past the rotor, it causes the rotor to spin. The sensor measures the speed of the rotor and converts it to a flow rate. The sensor has a digital output, which means that it provides a digital signal that can be read by a microcontroller or other host device. The sensor is commonly used in applications such as irrigation systems, water treatment plants, and industrial process control. It is often preferred over other types of flow sensors because it is easy to install and has a low cost. Now easily measure water (liquid) flow in your application using this 1/4" Brass water flow sensor. This is a good quality flow sensor with a brass body and can be used for industrial and commercial applications. This 1/4 inch water flow sensor is used extensively in various types of vending machines. Note: When magnetic material is close to the sensor, its characteristics may vary. In order to avoid particle debris, the sensor must be installed after a filter. The flow sensor installation has to avoid strong vibration and shaking of the environment, so as not to affect the sensor's measurement accuracy. Applications: Widely used in water industrial fields Thermostatic water heaters Water purifiers Water dispensers Smart card equipment Coffee machine

1/2 Inch Water Flow Sensor - YF-S201 The YF-S201 water flow sensor is a device that is used to measure the flow rate of water. It consists of a turbine-type rotor that is placed in the water stream, and as the water flows past the rotor, it causes the rotor to spin. The sensor measures the speed of the rotor and converts it to a flow rate. The sensor has a digital output, which means that it provides a digital signal that can be read by a microcontroller or other host device. The sensor is commonly used in applications such as irrigation systems, water treatment plants, and industrial process control. It is often preferred over other types of flow sensors because it is easy to install and has a low cost. Water flow sensors are installed at the water source or in pipes to measure the rate of flow and calculate the amount of water that has passed through the pipe. Water flow is measured in liters per hour or cubic meters. Working: A water flow sensor is made up of a plastic valve through which water can pass. A water rotor and a hall effect sensor are used to sense and measure the flow of water. When water flows through the valve, it causes the rotor to rotate. The motor's speed can be changed as a result of this. The hall effect sensor calculates this change and outputs it as a pulse signal. The rate of flow of water can thus be measured. The Hall effect is the primary operating principle of this sensor. The rotation of the rotor induces a voltage difference in the conductor in this sensor, according to this principle. This induced voltage difference runs in the opposite direction of the electric current. When the moving fan rotates due to the flow of water, the rotor rotates, inducing a voltage. The hall effect sensor measures the induced voltage and displays it on the LCD display. read more : What is a Water Sensor? The water flow sensor can be used with hot, cold, or warm water, as well as clean or dirty water. A microcontroller board such as Arduino , Raspberry pi , a LCD display or OLED Display , Breadboard and connecting wires are required for this. The sensor is installed at the water source inlet or the pipe opening. Three wires are connected to the sensor. The red wire connects to the supply voltage. A black wire connects to the ground, and a yellow wire collects the Hall effect sensor output. 5V to 18V DC is required for supply voltage. Also, read our blog on the Water Level Sensor explaining the different types of water sensors, working, and applications. Connection details: Red wire : +5V Black wire : GND Yellow wire : PWM output. Features: Lightweight, small in size, and simple to install. Durable wearable impeller shaft The upper and lower force structure seal ring never leaks. Chemical erosion and nonviolent shock No hitting or throwing. Vertically mounted Applications: This sensor can be used in water heating systems Automatic water dispensers Irrigation systems Other flow metering equipment.

DFRobot Gravity Analog Rotation Potentiometer Sensor for Arduino - Rotation 300° The Gravity Analog Rotation Potentiometer Sensor for Arduino is a versatile Arduino rotation sensor that provides a practical way to add manual control to your electronic projects. With its 300-degree rotation range, this analog potentiometer module allows users to input varying voltage levels by simply turning the knob, making it perfect for applications like controlling LED brightness, adjusting motor speed, or creating interactive controls for DIY projects. The sensor features the standardized Gravity interface, ensuring easy plug-and-play connectivity with Arduino boards and compatible microcontrollers without requiring additional wiring or complex setup procedures. What makes this 300-degree rotation sensor particularly useful is its compatibility with both 5V Arduino systems and 3.3V platforms like Raspberry Pi, Intel Edison, Joule, and Curie. This versatility allows students and hobbyists to use the same sensor across different development platforms without worrying about voltage compatibility issues. The Gravity interface potentiometer provides analog output that can be subdivided into 1024 distinct levels, offering precise control for various applications. Whether you're building a smart cooling fan, creating an interactive control panel, or teaching basic analog input concepts, this potentiometer sensor offers a reliable and straightforward solution that's accessible to beginners while being versatile enough for more advanced projects. Features: 300-degree rotation range for precise analog control. Compatible with both 5V and 3.3V systems for versatile use. Gravity interface design for simple plug-and-play connection. Analog output can be divided into 1024 steps for fine adjustment. Works perfectly with IO Sensor Expansion Shield for Arduino. No additional library required for basic functionality. Compact design for easy integration into various projects.

XD-621 Induction Touch Switch The Induction touch switch is an isolated touch sensor switch, applicable to all types of lamps on the medium (such as glass, acrylic, plastic, ceramic, etc.), such as energy-saving lamps, H tubes, LED lamps, and various household appliances. It has an on-chip active low noise PGA with selectable gain of 3264 and 128. The on-chip power supply regulator for load-cell and ADC analog power supply. On-chip active low noise PGA with selectable gain of 3264 and 128. On-chip power supply regulator for load-cell and ADC analog power supply. Installation process: Note: Before installation, please turn off the main power. Set a touchpoint in the mirror, the diameter of the contact point should be 9-10mm, first of all, must remove the mercury from the mirror around the point of contact, the size for the removable mercury should be 1.5-2mm; Make a grid in the middle of the touchpoint, there are three lines of the arrow on the cover of the switch, when installed, the three lines of the arrow should align with any of the three lines of the lattice and can touch to control whether after aligning the direction, now remove the paster from the touch plate, and then can install the touch switch on the mirror, after that, you can correct it using other things to avoid falling. Applications: Household appliances Energy-saving lamp LED lamps

Sound Sensor Module This Sound Detection Sensor Module consists of a Microphone, resistors, capacitor, potentiometer, comparator LM393 IC, Power, and status LED in an integrated circuit. Sound Detection Module Sensor for Intelligent Vehicle Compatible With Arduino is a Single channel signal output Sensor. The output is effective to the low-level sound signal with good fidelity, When there is sound, outputs low level and signal light. It can be used for Acoustic control light, give sound and light alarm working with the Photosensitive sensor, and sound control, sound detect. (The Maximum induction distance is 0.5M). This is an Arduino compatible module. Using this module you can even measure the intensity of ambient sound. Most of the digital sound sensor module just provides digital output i.e. if the sound is present or not. But this Sound sensor module also provides an analog output voltage that is directly proportional to the intensity of the ambient sound. Read our blog explaining the classification of sensors in IoT detailing 5 core classifications depending on how they work, 10 types of sensors, and the Characteristics of Sensors in IoT. Check out our collection of sensor at great prices! Applications: Hearing aids Telephones Tape recorders and karaoke Live and recorded audio engineering Radio and television broadcasting Speech recognition technology read our blog explaining what is sound sensor , provides information about sound sensors, covering their working principle, features, applications, and interfacing with Arduino.

1.5 Inch Water Flow Sensor YF - DN40 The YF-DN40 water flow sensor is a device that is used to measure the flow rate of water. It consists of a turbine-type rotor that is placed in the water stream, and as the water flows past the rotor, it causes the rotor to spin. The flow sensor measures the speed of the rotor and converts it to a flow rate. The sensor has a digital output, which means that it provides a digital signal that can be read by a microcontroller or other host device. The sensor is commonly used in applications such as irrigation systems, water treatment plants, and industrial process control. It is often preferred over other types of flow sensors because it is easy to install and has a low cost. The YF-DN40 sensor is designed to be installed in a pipe with a diameter of 40mm or 1.57 inches.

15cm Camera Cable for Raspberry Pi The camera cable is compatible with NoIR camera for Raspberry Pi. The 15cm Camera Cable can be used for Raspberry Pi 3 and Raspberry Pi 2. Ribbon Cable with FFC contacts (Opposite-sided).

Peacefair PZEM-004T 110V/220V 100A Smart Energy Meter The Peacefair PZEM-004T 110V/220V 100A Smart Energy Meter is a reliable and versatile tool designed for accurate single-phase energy monitoring. Supporting both 110V and 220V AC systems, it’s suitable for a variety of electrical setups and applications. With a current measurement capacity of up to 100A, it fits well in residential, industrial, and smart automation environments. Equipped with Modbus TTL communication, it enables seamless integration into data logging or control systems. This smart meter delivers real-time, precise insights into key parameters such as voltage, current, power, and energy consumption, making it an essential tool for efficient energy management. Features: It is compatible with both 110V and 220V AC systems, allowing for flexible usage. It measures up to 100A, ensuring accurate monitoring of high-power electrical systems. It continuously monitors voltage, current, power, and energy consumption to ensure accurate statistics. It supports Modbus TTL communication, making it easy to incorporate into industrial automation and control systems. It measures voltage, current, active power (W), energy consumption (kWh), frequency, and power factor, providing comprehensive data. Its compact size and sturdy construction make it ideal for long-term use and straightforward installation.

1/2 Inch Water Flow Sensor SEN-HZ21WA The SEN-HZ21WA water flow sensor is a device that is used to measure the flow rate of water. It consists of a turbine-type rotor that is placed in the water stream, and as the water flows past the rotor, it causes the rotor to spin. The sensor measures the speed of the rotor and converts it to a flow rate. The flow sensor has a digital output, which means that it provides a digital signal that can be read by a microcontroller or other host device. The sensor is commonly used in applications such as irrigation systems, water treatment plants, and industrial process control. It is often preferred over other types of flow sensors because it is easy to install and has a low cost. The SEN-HZ21WA sensor is designed to be installed in a pipe with a diameter of 1/2 inch (12.7mm). A pinwheel inside the sensor moves as the liquid flows through the sensor. A hall effect sensor within the sensor senses the rotation of the pinwheel and outputs a digital pulse for every rotation. By counting the pulses from the sensor, you can easily sense liquid flow through the sensor. This allows easy interface to microcontroller, Arduino , Raspberry Pi , etc. Applications: Water testing Water cooling systems Measure liquid flow

Heat Flame Sensor This tiny Flame sensor infrared receiver module ignition source detection module is Arduino compatible and can use to detect flame or wavelength of the light source within 760nm~1100nm also useful for Lighter flame detect at a distance of 80 cm. Greater the flame, the farther the test distance. It has a Detect angle of  60° and is very sensitive to flame spectrum. It produces the one-channel output signal at the D 0 terminal for further processing like an alarm system or any switching system. The sensitivity is adjustable with the help of a blue potentiometer given on the board. Onboard signal output indication, output effective signal is high, at the same time the indicator light up, the output signal can directly connect to microcontroller IO. The flame of the most sensitive sensors flame, the regular light is also a response, generally used for fire alarm purposes. Applications Fire detection Fire alarm Fire fighting robot Drying systems Industrial gas turbines Gas-powered cooking devices

Arduino Ek Innovation Kit The Arduino Ek Innovation Kit is complete electronics and IoT starter pack designed for students, hobbyists, and innovators to bring their creative ideas to life. Powered by the Official Arduino UNO EK R4 WiFi, this kit includes a wide range of sensors, actuators, and modules such as the DHT11 temperature & humidity sensor, HC-SR04 ultrasonic sensor, PIR motion sensor, IR proximity sensor, ADXL345 accelerometer, SG90 servo motor, and more. With additional essentials like a breadboard, jumper wires, LEDs, switches, keypad, and resistors, this kit provides everything you need to explore robotics, home automation, AIoT projects, and hands-on STEM learning. Whether you are a beginner experimenting with basic circuits or an advanced maker working on innovative prototypes, the Arduino Ek Innovation Kit is the perfect companion for your journey from concept to creation. What You Will Learn from this Kit? How to program and control the Official Arduino UNO R4 WiFi Interfacing and working with sensors (temperature, humidity, motion, ultrasonic, light, proximity, accelerometer) Building automation projects using relays, buzzers, and LEDs Controlling actuators like servo motors for robotics applications Designing IoT-based projects with WiFi-enabled Arduino Basics of circuit prototyping using breadboards, jumper wires, resistors, and switches Hands-on experience in STEM concepts including electronics, coding, and real-world problem solving

1/2 Inch Brass Water Flow Sensor SEN-HZ21WI The SEN-HZ21WI water flow sensor is a device that is used to measure the flow rate of water. It consists of a turbine-type rotor that is placed in the water stream, and as the water flows past the rotor, it causes the rotor to spin. The sensor measures the speed of the rotor and converts it to a flow rate. The sensor has a digital output, which means that it provides a digital signal that can be read by a microcontroller or other host device. The sensor is commonly used in applications such as irrigation systems, water treatment plants, and industrial process control. It can easily measure water (liquid) flow in your application using this 1/2" Brass water flow sensor . This is a good quality flow sensor with a brass body and can be used for industrial and commercial applications. This half-inch water flow sensor is used extensively in various types of vending machines. Working of a Flow Sensor: The water flow sensor consists of a copper body, a water rotor, and a hall-effect sensor. When water flows through the rotor, the rotor rolls, its speed changes with different rates of flow. And the hall-effect sensor outputs the corresponding pulse signal. This water flow sensor is connected in line with the liquid whose flow rate has to be measured. There is a simple rotating wheel with a magnet and when the liquid flows the wheel is rotated and a hall effect sensor measures how many times the wheel is rotated and accordingly gives pulses. By counting the number of pulses you can easily calculate the flow rate as well as the amount of liquid dispensed. Note: When magnetic material is close to the sensor, its characteristics may vary. In order to avoid particle debris, the sensor must be installed after a filter. The flow sensor installation has to avoid strong vibration and shaking of the environment, so as not to affect the sensor's measurement accuracy. Applications: Widely used in water industrial fields Thermostatic water heaters Water purifiers Water dispensers Smart card equipment Coffee machines Electric hot water heater Gas water heater Instrument meter

1/4 Inch Water Flow Sensor YF - S402 The YF-S402 water flow sensor is a device that is used to measure the flow rate of water. It consists of a turbine-type rotor that is placed in the water stream, and as the water flows past the rotor, it causes the rotor to spin. The sensor measures the speed of the rotor and converts it to a flow rate. The sensor has a digital output, which means that it provides a digital signal that can be read by a microcontroller or other host device. The frequency of the pulses is proportional to the flow rate of the liquid passing through the sensor. That digital signal, whose frequency is in the range between 0Hz and 100Hz, can be read directly through one of the digital input/output pins of a microcontroller. ID 8.5mm / OD 11mm. The water flow sensor measures the rate of a liquid flowing through it. The YF-S402 water flow sensor consists of a plastic valve body, flow rotor, and hall effect sensor. It is usually used at the inlet end to detect the amount of flow. When liquid flows through the sensor, a magnetic rotor will rotate and the rate of rotation will vary with the rate of flow. The hall effect sensor will then output a pulse width signal. Connect it to a microcontroller and you can monitor multiple devices such as your coffee maker, sprinkler, or anything else, and control the water flow rate to suit your needs. Features: Compact and Lightweight: Easy to install and integrate into various systems. High Sealing Performance: Designed to prevent water leaks with a sealing ring. Stainless Steel Axis: Durable and abrasion-resistant. Digital Output: Provides a series of digital pulses proportional to the flow rate. Wide Voltage Range: Operates between 5V to 24V. RoHS Compliant: Meets environmental and safety standards. High Precision: Accurate measurement of water flow. Wide Flow Range: Measures flow rates from 0.3 to 6 liters per minute. Applications: Agriculture: Used in irrigation systems to monitor and control water usage. HVAC Systems: Helps in monitoring water flow in heating, ventilation, and air conditioning systems. Plumbing: Used to detect and measure water flow in residential and commercial plumbing systems. Water Treatment: Monitors water flow in treatment plants to ensure proper processing. Environmental Monitoring: Measures water flow in natural water bodies for environmental studies. Smart Home Automation: Integrated into smart home systems for monitoring water usage and detecting leaks. Automatic Water Dispensers: Used in vending machines and dispensers to control water flow. Coffee Machines: Ensures precise water flow for brewing coffee.

Analog Sound Sensor Microphone Module for Arduino This is a high-quality Analog Sound Sensor highly sensitive Microphone Module for Arduino used in detecting the loudness in the ambient, the Arduino can collect its output signal and actuate accordingly. You may use it to make some funny interactive works such as a "clap and buzz" to find your lost keys or remote control if you add a buzzer. Features: Detects a range of sound signal sizes. Includes a filter-rectifier for stable DC output. Sensitive with built-in amplifier and adjustable gain. Provides a voltage signal for sound intensity, suitable for AD conversion. Outputs analog voltage at VCC/2 amplitude. Compatible with Arduino interfaces.