Photoelectric, ionization, or both? Ionization models are good at detecting fires that burn fast and move quickly, like kitchen grease fires. Photoelectric models are good for detecting smoldering ...

The start of the new year is the perfect time to double check your home's smoke alarms to be sure they're properly installed ...

Photo Ionization Sensor (PID) is a multisensory chemical detector that uses a pump to draw uninterrupted stream of air into a sensor and illuminates it with ultraviolet (UV) rays to ionize gas ...

When smoke particles disrupt the light beam, the sensor sets off the alarm ... These employ both technologies — ionization and photoelectric — in one device. All three types of smoke alarms ...

[Ashish] demonstrates the well-known photoelectric effect by triggering a sub-biased neon lamp with visible light from an LED. Neon bulbs work on the principle of voltage-induced ionization ...