Sensors

Infrared (IR) break-beam sensors are a simple way to detect motion. This sensor has a transmitter and receiver part. Point the transmitter at the receiver to create a beam which will trigger the receiver when this beam is interrupted.

Grove - AHT20 I2C industrial grade temperature and humidity sensor is equipped with a new generation of temperature and humidity sensor.

Grove - DHT20 Temperature & Humidity Sensor is the newly released version, an upgraded version of the DHT11. It’s a high quality, low-cost digital temperature, and humidity sensor.

The SHT40 has an excellent ±1.8% typical relative humidity accuracy from 25 to 75% and ±0.2 °C typical accuracy from 0 to 75 °C.

The NTCLE100E3 series Radial Leaded NTC Thermistor with a negative temperature coefficient.

The Grove - Water Level Sensor for Arduino can be used to measure the water level up to 10cm deep, with 5mm accuracy.

Light Sensor v1.2 is an analog module and can output various electrical signals which can be converted to different ranges (It depends on the Analog-to-Digital-Converter on your controller board.

PIR (Passive Infrared) sensores are used to detect motion within a distance of approx. 7 meters. The sensor has an adjustable delay and adjustable sensitivity.

This is an active buzzer with a diameter of 13.4mm. Power it with a voltage between 3 and 16 VDC to make it buzz.

A photoresistor also called LDR (Light Dependent Resistor) is a component whose resistance is higher in less light.

The soil moisture sensor consists of two probes that allow the current to pass through the soil and then obtain resistance values to measure soil moisture content.