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In the broadest definition, a sensors is a device, module, machine, or subsystem whose purpose is to detect events or changes in its environment and send the information to other electronics, frequently a computer processor. A sensor is always used with other electronics.
these are used in everyday objects such as touch-sensitive elevator buttons (tactile sensor) and lamps which dim or brighten by touching the base, besides innumerable applications of which most people are never aware. With advances in micromachinery and easy-to-use microcontroller platforms, the uses of have expanded beyond the traditional fields of temperature, pressure or flow measurement,[1] for example into MARG sensors. Moreover, analog sensors such as potentiometers and force-sensing resistors are still widely used. Applications include manufacturing and machinery, airplanes and aerospace, cars, medicine, robotics and many other aspects of our day-to-day life. There are a wide range of other sensors, measuring chemical & physical properties of materials. A few examples include optical sensors for Refractive index measurement, vibrational sensors for fluid viscosity measurement and electro-chemical for monitoring pH of fluids.
A sensitivity indicates how much the output changes when the input quantity being measured changes. For instance, if the mercury in a thermometer moves 1 cm when the temperature changes by 1 °C, the sensitivity is 1 cm/°C (it is basically the slope dy/dx assuming a linear characteristic). Some sensors can also affect what they measure; for instance, a room temperature thermometer inserted into a hot cup of liquid cools the liquid while the liquid heats the thermometer. Snsors are usually designed to have a small effect on what is measured; making the sensor smaller often improves this and may introduce other advantages.[2]
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PIR Motion sensor – HC-SR501
රු400.00රු345.00PIR Motion sensor Ideal to detect if a human or object has moved in or out of the sensor range Best price in sri lankaPIR Motion sensor – HC-SR501
PIR Motion sensor Ideal to detect if a human or object has moved in or out of the sensor range Best price in sri lankaරු345.00Was රු400.00Save රු55රු400.00රු345.00 -
MAX30102 Heart Rate and Pulse Oximeter Sensor
රු1,072.50රු960.00MAX30102 Heart Rate and Pulse Oximeter Sensor module uses a red LED (660nm), infrared LED (880nm), and photodetector to approximate blood oxygen content and heart rate pulses. The sensor can be placed on a finger, wrist, or other area with significant blood flow to measure these parameters.MAX30102 Heart Rate and Pulse Oximeter Sensor
MAX30102 Heart Rate and Pulse Oximeter Sensor module uses a red LED (660nm), infrared LED (880nm), and photodetector to approximate blood oxygen content and heart rate pulses. The sensor can be placed on a finger, wrist, or other area with significant blood flow to measure these parameters.රු960.00Was රු1 072.50Save රු112.5රු1,072.50රු960.00In Stock 15 Available -
Soil Moisture Sensor Best Price in Sri Lanka
රු190.00Short Info- Operating voltage: 3.3V~5V
- Dual output mode, analog output more accurate
- A fixed bolt hole for easy installation
- Cable Length: Approx.21cm
Soil Moisture Sensor Best Price in Sri Lanka
Short Info- Operating voltage: 3.3V~5V
- Dual output mode, analog output more accurate
- A fixed bolt hole for easy installation
- Cable Length: Approx.21cm
රු190.00Was රු190.00Save රු0රු190.00In Stock 16 Available -
Ultrasonic Sensor HC-SR04
රු450.00රු410.00Short Info- Detection Distance: 2cm-450cm.
- Working Voltage : 5V(DC)
- Static Current: Less than 2mA.
Ultrasonic Sensor HC-SR04
Short Info- Detection Distance: 2cm-450cm.
- Working Voltage : 5V(DC)
- Static Current: Less than 2mA.
රු410.00Was රු450.00Save රු40රු450.00රු410.00 -
Capacitive Proximity Sensor (LJC18A3-BZ / BX )
රු1,639.00රු1,490.00Capacitive Proximity Sensor (LJC18A3-BZ / BX ) NOW Quick Delivery around Sri Lanka within 24 hours !! Call us for More detail and free guide !!Capacitive Proximity Sensor (LJC18A3-BZ / BX )
Capacitive Proximity Sensor (LJC18A3-BZ / BX ) NOW Quick Delivery around Sri Lanka within 24 hours !! Call us for More detail and free guide !!රු1 490.00Was රු1 639.00Save රු149රු1,639.00රු1,490.00In Stock 4 Available -
IR Sensor
රු200.00රු150.00Short Info- Detects the reflected distance: 1 - 8mm
- Voltage: 3.3 - 5V
- Built in LED indicator
IR Sensor
Short Info- Detects the reflected distance: 1 - 8mm
- Voltage: 3.3 - 5V
- Built in LED indicator
රු150.00Was රු200.00Save රු50රු200.00රු150.00In Stock 10 Available -
Rain Drop Sensor Module
රු242.00රු180.00Short Info:- Current - 20 mA
- I/O Pins - Digital Output Analog Output
- Operating Voltage - 3.3V ~ 5V
Rain Drop Sensor Module
Short Info:- Current - 20 mA
- I/O Pins - Digital Output Analog Output
- Operating Voltage - 3.3V ~ 5V
රු180.00Was රු242.00Save රු62රු242.00රු180.00 -
Liquid Water PH Value Detection Sensor with Module
රු6,500.00රු6,150.00Liquid Water PH Value Detection Sensor with Module Best price in Sri Lanka Cash on Delivery availableLiquid Water PH Value Detection Sensor with Module
Liquid Water PH Value Detection Sensor with Module Best price in Sri Lanka Cash on Delivery availableරු6 150.00Was රු6 500.00Save රු350රු6,500.00රු6,150.00In Stock 1 Available