MQ135 Air Quality Gas Sensor moduleFor general detection of presence of hazardous gases like ammonia, aromatic compounds, sulfur, benzene vapor, smoke and other gases harmful gas Power Supply: 5VDCOutput: Digital (1bit) and Analog..
This Waterproof Ultrasonic Distance Sensor has watertight sensor that can work in wet environments without the risk of getting damaged.Operating Voltage: 5VFrequency: 40KHzDetection Distance Range: 0.25-4.5MControl I/O: Trig/RX, Echo/TXPackage:1x Sensor unit1x Ultrasonic Distance Sensor Board
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Microphone Sound Sensor ModuleWith Analog and Digital outputAdjustable comparator digital output with LED indicatorWiring :Sample Arduino Sketch
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Obstacle sensor moduleAlso known as Collision or Proximity sensor.The Infrared Obstacle Collision Proximity Sensor is a device that can detect the presence of an obstacle in front of it by using infrared signals. The detection range of this sensor is from 2cm to 30cm and can be adjusted by a built-i..