Grove's capacitive humidity sensor (corrosion resistant) is a soil moisture sensor based on changes in capacitance. Compared to resistive sensors, capacitive sensors do not require direct exposure of metal electrodes, which can significantly reduce electrode erosion.

The Reader of Capacitive Fingerprint is a Module of Fingerprint standard designed for Secondary Development, allows a Verification of Fingerprint Fast and Stable.

Based on a STM32F105R8 High Speed ​​Digital Processor, combined with high security commercial Fingerprint Algorithm and advanced semiconductor sensor, the capacitive fingerprint reader becomes a simple yet intelligent integration module, providing features such as registration digital printing, image processing, resource location, model generation and storage, fingerprint matching and research, etc.

LCD Gráfico 128x64 STN LED Backlight

SparkFun Luminosity Sensor - TSL2561

Este módulo usa um interruptor de inclinação de mercúrio para ativar um LED. Há também uma saída digital conectada através de uma resistência de 10K embutido.

The Grove – UV Sensor is used for detecting the intensity of incident ultraviolet(UV) radiation. This form of electromagnetic radiation has shorter wavelengths than visible radiation. It is based on the sensor GUVA-S12D.It has a wide spectral range of 200nm-400nm. The module will output electrical signal which is varied with the change of the UV intensity. UV sensors are used for determining exposure to ultraviolet radiation in laboratory or environmental settings.

ITEAD's light sensor is mainly used to detect the intensity of light in the environment.

The flame sensor can be used to detect fire or another wavelength in light from 760 nm - 1100 nm.

LDR Light Sensor with Relay

LDR (or light-dependent resistance , or photoresistor ) is a variable resistance. The light falling on the sensor decreases the resistance .

Now, it's time to add a more sophisticated interactive way to your project. The DFRobot touch kit comes with three types of touch sensors . A ipod styple touch wheel, a touch touch screen that supports backlit and a grid touch pad that can recognize something unique.

Energy Saving Lamp E27 15W 230V Green - EDM.

Ficha Jack 3.5mm 4P Macho

Light Sensitivity Switch Kit, Velleman.

Basic breakout board for the TEMT6000 Ambient Light Sensor.

This Flame Sensor is sensitive to the flame, but also can detect ordinary light. Usually used as a flame alarm. 

This is a simple to use Light Sensor that outputs an analog value from 0 to 5V.