The item is photoelectric smoke detector, detects the smoke by a couple of infrared diodes. 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.
ANKA Sci-Tech Co.,Ltd is one of the leading China hotel 24v fire alarm smoke alarms manufacturers and suppliers, and also a professional company equipped with productive factory, we supply hotel 24v fire alarm smoke alarms with high quality and competitive price.
1. DC24V for 2 wire, DC12v for 4 wire.
2. 2 wire is remote LED when detect smoke, 4 wire is sound alarm + NO/NC relay output.
3. High shield with metal cover, high quality maze.
4. Dual LED.
500uA (relay N.O.) 12mA(relay N.C.)
35mA at DC12V 60mA at DC24V
18mA (relay N.O.) 10mA (relay N.C.)
Red LED ON
Relay output, buzzer(onlyAJ-702-4)
57℃/137F or 8~15℃/Min(Rate-of-Rise)
why choose us?
- 2000 square meters factory, have capability to supply wide range of products
- Good quality control ,with competitive prices.
- Prompt delivery.
- Good after-sales service.
- No Minimum order quantity limited. OEM and ODM are also accepted.
- We locate in Shenzhen of China, easy for export.
1.We guarantee that all our items are "as stated" in their descriptions. We strive for 100% customer satisfaction on every sale we complete.
2.We are manufacture, there is no middle man, no high markup, so we can provide quality items yet very competitive price.
3.If you have any questions please contact us first, most are responded within 12 business hours.
1. All package can sent by FedEx/DHL/UPS/EMS, based on customer requires.
2. Freight By Sea to Any nearest port of customer country.
3. Freight by Air to airport of import country.
ANKA is a high-tech enterprise specializing in the whole process of Research, Development, Manufacture and Marketing security alarm products. With the company policy of "Innovative technology, Makes safe life" and the responsibility of "Progress for protecting people's safety".
1. Quality of our company.
We are the manufacturer of alarm system for more than 10 years, we are full of experience and technology.
2. Quality of our products.
Our engineers who ever worked in a very famous company of alarm system, all the products must be strictly inspected before selling.
3. Quality of our services.
All of our products have a full two-year warranty and low repair rate.
4. Quality of your shipment.
We arrange the shipment as soon as we get the payment, quickly and professionally.
5. Quality of our sales representatives.
Truly, Warmly, Patiently, Professionally.