%0 Journal Article %T Alarm with sound and light for critical concentration of methane gas in the air %A Kovendi Zoltan %J Journal of Computer Science and Control Systems %D 2008 %I Editura Universit??ii din Oradea %X This application focuses at the problem of critical concentration ofmethane gas in the air. If this concentration is bigger than 0,2 % wecan have human losses. %K methane %K microcontroller %K alarm %K signal %K PIC %K cycle %K tension %U http://electroinf.uoradea.ro/reviste%20CSCS/documente/JCSCS_2008/JCSCS_2008_30_Kovendi_1.pdf