A-Star 328PB Micro - 3.3V, 12MHz

The SparkFun Current Sensor Breakout is a High Precision Card that uses the ACS723 for Moderate AC and DC Current Detection Applications. The ACS723 Sensor uses a Hall Effect Sensor to Emit a Voltage relative to the Current that flows through the IP + and IP- Pins on the Board. The advantage of using a Hall Effect Sensor, specifically, is that the Circuit Being Detected and the Sensor Reading Circuit are Electrically Isolated, which means that although your Arduino is Operating at 5V, the Detected Circuit may be Operating at Higher DC or AC voltages.

A-Star 328PB Micro - 5V, 20MHz

Electronic Brick - Sensor de Corrente - Loop 4-20mA

Bi-directional Logic Level Converter 4-channel by I2C BSS138

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.

This is a DC-DC buck-mode power module, with input voltage range of 3V - 15V and fixed voltage / current at fixed 5V / 600mA . Working frequency can reach 0.5 MHz . The module has high conversion rate and small size, easy to incorporate.

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

The Current Sensor 70A is a great option for those looking for equipment to measure current up to 70A and that is non-invasive.

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 .

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

The Module KA2284 is a Battery, Power and Audio Level Indicator.

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.