Key features include Arduino microcontrollers interfaced with gas sensors like MQ-2, MQ-3, or MQ-7, communication modules (Wi-Fi, Bluetooth, GSM), alarm systems (LEDs, buzzers), and reliable power ...

As the first metal-oxide gas sensor featuring multiple sensing elements on one chip, the SGP30 provides more detailed information about the air quality. Download all the source files and open examples ...

That's because the sensors inside the alarm deteriorate, and lose their effectiveness over time. However, you'll most likely have to replace the smoke detector's battery more than once over its ...

School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, China Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong ...

Optical smoke alarm uses MOC 7811 which is an optocoupler.The sensor designed for this device is based on the principle of scattering of infrared rays.The light coming from the light source passes ...

State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China University of Science and ...

Abstract: Zinc oxide nanowire (ZnO NW) gas sensor with single Schottky contact is capable of sensitive detection of gas molecules. In this paper, we investigate the effect of design factors, such as ...

AIMS To compare arterial blood gas (ABG) readings obtained with a multiparameter intra-arterial sensor with those from an ABG analyser. CONCLUSIONS Continuous MPIAS ABG monitoring is an exciting ...