1. Introduction

   This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration. The drive circuit is very simple, all it needs is one resistor. A simple interface could be a 0-3.3V ADC.

   The latest gas sensor is designed to meet the demand of enviromental protection, it MQ - 3 gas sensor,with high sensitivity to ethanol, can resist the interference of gasoline, smog, vapor, detect ethanol in the air sensitively.the material of MQ - 3 gas sensor is SnO2 ,which has low conductivity in clean air. With a 3p line connecting sensor shield(Arduino-Compatible) , through mega168 controller programming(Arduino-Compatible), it an be made ethanol alarm, alcohol tester with buzzer module and relay module.

   Application:
   
   For motor vehicle drivers and other non-drinking and operating personnel on-site testing, but also for other places ethanol vapor detection, detection of alcohol range: detection range of 10 ~ 1000ppm

   
   

   Specifications:

   detection range: 10-100ppm ethanol

   characteristic gas: 125ppm ethanol

   heating voltage: 5 + - 0.2 V (AC·DC)

   loop voltage:24V DC

   load resistance: adjustable

   voltage in clean air: 1.5 V

   service life: 5 years

   Uses the MQ-3 C2H5OH Gas Sensor

   Easy SIP interface

   Compatible with most microcontrollers

   Power requirements: 5 VDC @ 250 mA (Heater On) / 60 mA (Heater Off)

   nterface: 1 TTL compatible input (HSW), 1 TTL compatible output (ALR)

   Dimensions: 1.5 x 1.0 x 1.0 in(38.1 x 25.4 x 25.4 mm)

   Operating temp range: 14°F to 122°F (10°C to 50°C)

   size: 20.5 mm x 41mm

   weight: 6g

   Note: this sensor is equipped with sensitivity adjustment potentiometer: clockwise regulation, reverse adjust small.Such as alcohol by adjusting the sensitivity of the sensor, can obtain satisfactory alcohol concentration fan initiate.

    Hans Innovation Group (HIG) is a registered in Brisbane, Australia, attached to Griffith University high-tech company in Australia, is a doctor and professor and senior engineers and other professionals constitute a team of technological innovation .
　　Shenzhen HanShiXin Technology Development Co., Ltd. (HIG-tech) was set up product design and business development for registered company in Shenzhen China, committed to speaker (Vibration speaker) product development and production.
　　Vibration speaker (Vs) is a new product, the principle and the traditional piston-style speakers and flat speakers (NXT) is different from the structure of speakers, The Vs is driven media surface (desk, glass, cardboard, etc.) to vibration sound. Driven in the Vs, the resonance vibration of the media point to the source surface to the heart, the audio transmission to the surrounding infinite vibration, in the medium to produce uniform strength of two sides of the sound waves, so that the driven side of the desktop media, glass, cardboard and other play the melodious music, of which the wood desktop effects especially good.
　　HIG-tech accumulated many years of industry experience, has acquired the company involved in a number of proprietary subject areas and key technology, first developed in the international community with independent intellectual property rights "Attached active audio vibration sound module," and developed the world"s first production of a number of patents, specifically with the phone (MP3) such use, may be worn as decoration "badge vibration speaker." Which speakers to form new, small and beautiful, mellow sound, whispered Chunhou so loved by the majority of young people, but also as a friend to provide a greater imagination and entertainment space.
　　HIG in the company founder Dr. Hans Tang & Dr. Weidong Guo"s lead, has been dedicated to geotechnical engineering and engineering design platform for large-scale surveys, environmental monitoring, research and development of digital instruments, designed and manufactured the world"s first standard concentration liquid organic gas generator and the world"s leading digital multi-gas calibration smart MEMS gas sensor from (AI MEMS Sensor).
　　HIG can provide customers from product design to production of full service. After constantly updated management ideas and technology structure, has formed a scale, series, personalized R & D and production patterns, fully meet the needs of customers in different directions.