Conventional Fire Alarm System Combined Smoke And Heat Detector
Product Conventional fire alarm system combined smoke and heat detector Features of product Photoelectric Smoke detector, 4-wire ,network by Relay This product named Photoelectric smoke and heat detector (hereinafter called detector)detects the smoke by a couple of infrared diodes,includes a...
Conventional fire alarm system combined smoke and heat detector
Features of product
Photoelectric Smoke detector,4-wire,network by Relay
This product named Photoelectric smoke and heat detector (hereinafter called detector)detects the smoke by a couple of infrared diodes,includes a built-in+57 ± 2.7 heat detector.The principle of detecting is granule in the smoke can reflect infrared light.Infrared diodes are placed in the 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 and 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 and 4-wire detectors.
Operating voltage : DC9-35V Standby current: 500uA (relay N.O.) 12mA(relay N.C.) Alarm current: 18mA (relay N.O.) 10mA (relay N.C.) Alarm indication: Red LED ON Temperature range: -10℃~+50℃ Humidity: 0%~95%RH(No condensation) Alarm out put: Relay output Alarm Temperature: 57℃/137F or 8~15℃/Min(Rate-of-Rise) Contact rating: 0.5A at DC28V Sensitivity : 0.5dB/m (±0.1dB/m)
Why choose us
1. The factory with 2000 square meters, has the capability to supply a wide range of products
2. With good quality control and competitive price.
3. Prompt delivery.
4. Good after-sales service.
5. No minimum order quantity limitation. OEM and ODM are also accepted.
6. We locate in Shenzhen of China, it is convenient for us to export our items.