Air in the dual sensing chambers is irradiated to produce ions that travel to the positive and negative electrodes, creating a current flow. As smoke enters the outer chamber, the flow drops and voltage increases. There are two main types of smoke detectors: ionization detectors and photoelectric detectors. A smoke alarm uses one or both methods, sometimes plus a heat detector, to warn of a fire. The devices may be powered by a 9-volt battery, lithium battery, or 120-volt house wiring.
Air in the dual sensing chambers is irradiated to produce ions that travel to the positive and negative electrodes
Air in the dual sensing chambers is irradiated to produce ions that travel to the positive and negative electrodes |
Conventional Reflective Beam Detector has built in Laser beam pointing and Digital guide display for real user friendly alignment method. The Laser beam pointing accurately point the exact location where to mount mirror and with additional digital guide display allows to ...
Come From Shenzhen Puzhesi Technology Co., Ltd.
SPV30/12-YSP Multi-gun Head Fire Fighting System Product Description It is an excellent partner for eccentric pendulum high-pressure fire pump, the use of pump high pressure, through pressure energy storage, can achieve multi-gun head work at the same time. One pump and ...
flexible coupling material :ductile iron, Size:inch 1-12, surface treatment:common red painting/Epoxy/Galvanized color:RAL3000 RED, FM Approved and UL Listed, can be used in fire protection, system, feed water, natural gas system and etc. ...
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