Sensors
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₹100.00Overview
The Analog Water Level Sensor (Rain/Liquid Level Depth Sensor) is an easy-to-use, cost-effective electronic component designed to detect water presence, measure droplet density, and determine liquid level depth. It operates using resistive trace detection across ten exposed, interleaved copper traces on the sensor PCB.
When submerged or exposed to water droplets, the conductive nature of water bridges the gap between adjacent interleaved traces, acting as a variable resistor. The level of water directly affects the overall electrical resistance: a higher water depth or greater surface immersion results in lower resistance and a higher output voltage at the signal pin (S). An onboard S8050 NPN transistor acts as an amplification/buffering driver, providing a smooth analog voltage signal suitable for microcontrollers like Arduino, ESP32, and Raspberry Pi.
Key Components Identified On Module: • Interleaved Copper Traces: 10 parallel exposed traces (5 power, 5 signal) for conductive sensing.
• S8050 NPN Transistor: Amplifies weak currents passing through water for reliable analog signal readings.
• Power LED Indicator: Provides visual confirmation when power (VCC and GND) is supplied to the module.
• 3-Pin Header Interface: S (Signal / Analog Output), + (VCC / Power 3.3V–5V), – (GND / Ground).
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₹55.00Overview
The image depicts a Capacitive Soil Moisture Sensor v2.0 (specifically model HW-390). Unlike traditional resistive soil moisture sensors, which suffer from rapid corrosion due to direct electrical contact with soil, this capacitive sensor measures soil moisture content through changes in dielectric permittivity, avoiding exposed electrodes. It features an integrated voltage regulator (often TL431 or NE555-based circuitry) and delivers an analog voltage output corresponding to soil moisture level.
- Corrosion-Resistant Design: Embedded inside non-conductive PCB trace layers, preventing oxidation in wet soil.
- Analog Output: Delivers an analog voltage signal (AUOT/AOUT) directly proportional to soil capacitance.
- Wide Compatibility: Works seamlessly with 3.3V and 5V microcontrollers like Arduino, ESP32, ESP8266, and Raspberry Pi.
- Integrated Regulator: On-board chip provides stable operation across varying supply voltages.
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₹75.00Overview
The DHT11 is a basic, ultra-low-cost digital temperature and humidity sensor. It utilizes a capacitive humidity sensor and a thermistor to measure the surrounding air, outputting a digital signal on the data pin (no analog input pins needed). It is widely used in beginner electronics, IoT projects, and environmental monitoring systems due to its simplicity, reliability, and low power consumption.
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₹125.00Overview
The DHT22 (also widely known as AM2302) is a high-precision, low-cost digital temperature and humidity sensor. The image depicts the DHT22 mounted on a breakout PCB module equipped with built-in pull-up resistors and decoupling capacitors, making it ready for immediate integration with microcontrollers such as Arduino, ESP32, ESP8266, and Raspberry Pi.
Utilizing a capacitive humidity sensing element and a thermistor, the module delivers a calibrated digital signal output over a single-bus (1-Wire) protocol. Compared to its predecessor (DHT11), the DHT22 offers higher accuracy, a broader temperature/humidity measurement range, and higher precision.
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₹105.00Overview
The FC-28 Soil Moisture Sensor is a widely used, low-cost electronic module designed to measure the volumetric water content in soil. It operates on the resistive measurement principle: as moisture content in the soil increases, its electrical conductivity increases (resistance decreases). Conversely, dry soil exhibits high electrical resistance.
The sensor assembly consists of two main components:
• Soil Probe: A two-pronged PCB probe inserted directly into the soil to detect electrical conductivity changes.
• Control Module: Built around the LM393 low-power dual voltage comparator IC, featuring an adjustable potentiometer for threshold sensitivity, dual output pins (Analog & Digital), and power/status LED indicators. -
₹65.00Overview
The HC-SR04 is a widely popular, low-cost ultrasonic distance sensor module designed for non-contact distance measurement. It operates on sonar principles, emitting ultrasonic sound bursts at 40 kHz and calculating the distance to an obstacle based on the time taken for the echo signal to return to the receiver.
As shown in the image, the module consists of an ultrasonic transmitter (labeled ‘T’) and receiver (labeled ‘R’), a 4-pin male header (Vcc, Trig, Echo, Gnd), a precision timing crystal, and onboard processing ICs on the back. It offers high accuracy (up to 3mm resolution) and stable readings ranging from 2 cm to 400 cm (~4 meters), making it an essential component for robotics, automation, and DIY microcontroller projects.
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₹45.00Overview
The IR Flame Sensor Module shown in the image is a high-sensitivity electronic detection board designed to detect fire sources or light sources with wavelengths ranging from 760 nm to 1100 nm. At its core, the sensor features an infrared photodiode (the black receiver bulb) paired with an LM393 high-precision voltage comparator IC.
The module provides both Analog (AO) and Digital (DO) output signals. The analog output gives a real-time signal strength reading proportional to the light/fire intensity, while the digital output produces a binary HIGH/LOW signal triggered when the detected radiation exceeds a adjustable threshold set via the onboard potentiometer. It also features dual LED indicators for Power status (PWR-LED) and Digital Output activity (DO-LED).
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₹50.00Overview
The Light Sensor Module (v0.9b, model 034000WH2 / 10589A-01) is an analog electronic board designed to detect ambient light levels. It features a Photoresistor (Light Dependent Resistor / LDR) as its primary sensing element. As light intensity increases, the resistance of the LDR decreases, producing a corresponding change in output voltage.
The module includes an onboard operational amplifier (U1, LM358B / MV358I) configured as a buffer/signal conditioning stage to ensure stable, reliable signal transmission to microcontrollers such as Arduino, Raspberry Pi, ESP32, and other embedded platforms.
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₹55.00Product Description
The LM35 is a precision analog temperature sensor with an output voltage directly proportional to temperature in degrees Celsius. Its simple 3-pin TO-92 package makes it ideal for student projects, Arduino and ESP32 applications, temperature monitoring, automation, and embedded systems. -
₹3,500.00Overview
The Soil NPK Sensor is an advanced agricultural sensing device designed to detect the nitrogen (N), phosphorus (P), and potassium (K) content in soil. By measuring these essential nutrients in real time, the sensor enables farmers, researchers, and automated irrigation system managers to evaluate soil fertility and optimize fertilizer usage efficiently.
Constructed with a rugged, waterproof casing and durable stainless steel probe prongs, this sensor is built for long-term insertion into soil or growth media. It provides real-time digital communication via RS485 MODBUS protocol, making it ideal for integration into smart agriculture systems, IoT gateways, and automated controllers.
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₹9,000.00Overview
The Soil Salinity Sensor (Soil EC Sensor) is an industrial-grade precision instrument designed to measure the total salt content and electrical conductivity (EC) of soil. Featuring a robust, epoxy-encapsulated waterproof body and high-durability stainless steel probe pins, this sensor allows for direct insertion into soil or aqueous nutrient solutions. It provides continuous, highly reliable monitoring for smart agriculture, environmental research, and automated irrigation management.
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₹10,000.00Overview
The DS18B20 Waterproof Soil Temperature Sensor is a highly accurate, digital temperature probe enclosed in a stainless steel casing. Designed specifically for harsh environmental conditions, it utilizes Maxim Integrated’s 1-Wire protocol, allowing precise digital temperature measurements over a single signal line. The rugged, waterproof stainless steel probe protects the internal thermal sensor against moisture, soil corrosion, and mechanical shock, making it an ideal component for automated agriculture, soil monitoring systems, and outdoor IoT applications.
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₹250.00Overview
The YF-S201 is a widely used Hall-effect water flow sensor designed to measure liquid flow rate and volume in fluidics systems. It features a durable plastic body containing a water rotor (pinwheel) equipped with a magnetic element, alongside an integrated Hall-effect sensor module. When liquid flows through the sensor body, it forces the rotor to spin. As the internal magnets rotate past the Hall-effect sensor, magnetic pulses are generated. The output pulse frequency is directly proportional to the velocity and volume of the liquid passing through, allowing microcontrollers such as Arduino, ESP32, or Raspberry Pi to accurately measure flow rate and total volume.
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₹45.00Overview
The YL-83 Rain Sensor Module (often paired with the Raindrops Detection Board YL-38 control board) is an easy-to-use electronic module designed for detecting rain and moisture presence. The system consists of two primary parts:
• Rain Sensing Board (Sensing Pad): A nickel-coated PCB board with interleaved conductive traces. When raindrops fall on the board, water bridges the copper tracks, decreasing electrical resistance across the tracks.
• Control Module Board: Based on the LM393 operational amplifier comparator, this board processes the resistance change from the sensing pad. It features an adjustable potentiometer to tweak sensitivity and offers dual output options: both Digital (HIGH/LOW) and Analog signals.Key Feature Summary: Dual output mode (Analog for precise moisture depth, Digital for simple rain presence threshold), anti-oxidation nickel-plated sensor pad, adjustable threshold potentiometer, and onboard Power & Signal LEDs.