Product decription:
In one type of photoelectric device, smoke can block a light beam. In this case, the reduction in light reaching a photocell sets off the alarm. In the most common type of photoelectric unit, however, light is scattered by smoke particles onto a photocell, initiating an alarm. In this type of detector there is a T-shaped chamber with a light-emitting diode (LED) that shoots a beam of light across the horizontal bar of the T. A photocell, positioned at the bottom of the vertical base of the T, generates a current when it is exposed to light. Under smoke-free conditions, the light beam crosses the top of the T in an uninterrupted straight line, not striking the photocell positioned at a right angle below the beam. When smoke is present, the light is scattered by smoke particles, and some of the light is directed down the vertical part of the T to strike the photocell. When sufficient light hits the cell, the current triggers the alarm.
Features: Power supply: DC 9V replaceable battery Conform to EN14604:2005/AC:2008 Alarm volume: ≥85dB at 3m Big test button for easy weekly testing Product life time >10 years Low battery signal alarm Easy to install with mounting bracket Safety clip feature, not allow mounting without battery installed Size: Φ101mm * 36mm
Product Parameter:
Factory Photos:
FQA：
Q: How do you treat the customer complaints?
A: All requests will be reply within 12 hours.
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