DFRobot (SEN0128) Analog Alcohol Sensor, MQ3, Arduino Development Boards

Gravity analogue alcohol sensor (MQ3) for Arduino t uses a MQ3 probe which canbe used in a breathalyser. It has a high sensitivity to alcohol and lesssensitivity to benzine. The sensitivity is able to be adjusted by thepotentiometer. The output is proportional to the density of gas. Users can useanalogue reading to read the data from this sensor. To ease the difficulty ofusing this sensor, a gravity Interface is adapted to allow plugplay. The ArduinoIO expansion shield is the best match for this senor connecting to Arduinomicrocontrollers.Features:- Accessory Type: ANALOGUE Alcohol Sensor (MQ3)- For Use With: Arduino Development Boards- Product Range: Gravity Series- Standard assembling structure (Times-of-5mm centre distance between two 3mmmounting holes)- Easily recognitive interfaces of sensors ("A" for analogue and "D" fordigital)- Icons to simply illustrate sensor function- High quality connector and potentiometer- Immersion gold surface- 5V power supply, analogue interface type- Fast response and high sensitivity- Stable and long life, simple drive circuit- Size is 36.4 x 26.6mm (1.43" x 1.05")