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$3.5 Fire Alarm Sensor Industrial Optical Photoelectric Outdoor interconnected Conventional Smoke Detector En14604 Standard YNA-SD331
1.Product Introduction
This product named photoelectric smoke detector detects the smoke by a couple of infrared diodes.The princippe fo detecting is granule in the smoke can reflect infrared lght. Infrared diodes are placed in he special chamber. The chamber can shield external light, but doesn't affect the smoke into it. While there is no smoke, the diode can receive very weak infrared light. When the smoke entering the chamber, diode can receive more the more light, and the detector can give out alarm signal when the smoke attains the certain density. In order to reduce the interference and lower power consumption, the emitting circuit adopts the pulse signal, The product in accordance with the networking approach is divided into 2-wire detectors.
2.Technical Specification

3.Product Feature
(1) Strong adaptability for circumstance
(2) SMT design, high stability
(3) 9~35 VDC wide voltage operating range
(4) Low standby current
(5) Power supply non-polarized input
(6) Twin LED for 360 angle visual
(7) Flashing LED power indicator
(8) Remoteled indicator output
(9) Metal shield, anti-electromagnetic interference
4.Wiring Diagram

Shenzhen Yongningan Fire Technology Co.,Ltd. is a fire alarm solution complete system provider with full range of fire alarm products series involved.
Yongningan has a complete technical R&D platform,A research team made up of technical elites of the industry provides a guarantee for the continuous improvement and innovations of the products and technologies of Yongningan Fire Technology.
We are making great efforts to develop an overseas market and our products have been sold to more than forty countries and regions including Japan, the EU, South Asia, Africa, etc.
With a vision of "Create a safe home", Yongningan makes unremitting efforts to create a safe, environmentally friendly, intelligent and comfortable living environment with its technologies and experience accumulated during its long-term engagement in the multiple professional fields of the weak current of buildings.



1.Fire alarm system full plan design:Yes
2.Fire alarm control panel technical support: Yes
3.Fire alarm control panel after sale service: Yes
4.Fire alarm control panel OEM/ODM: Yes
5.Fire alarm control panel warranty: 1 year
1.MOQ: 1 pcs
2.Delievry time :generally 5 to10 days .Mass product will be more.
3.Payment terms :T/T L/C
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