Gold Member Since 2014
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Shenzhen Wale Group Co., Ltd.

Smoke Sensor Alarm, Smoke Sensor, Photoelectric Smoke Detector manufacturer / supplier in China, offering Wireless Photoelectric Smoke Detector for House Safety, Intelligent Wireless Infrared Outdoor PIR Detector, Outdoor Pet Immunity Function Tri-Tech Infrared PIR Detector and so on.

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Supplier Homepage Product Smoke Sensor Wireless Photoelectric Smoke Detector for House Safety

Wireless Photoelectric Smoke Detector for House Safety

Purchase Qty.:
10-99 100-499 500-999 1,000+
FOB Unit Price: US $5.8 US $5.5 US $5.2 US $4.8
Purchase Qty. (Pieces) FOB Unit Price
10-99 US $5.8
100-499 US $5.5
500-999 US $5.2
1,000+ US $4.8
Get Latest Price
Production Capacity: 100000 PCS Per Month
Transport Package: White Box Packaging or Colorful Box
Payment Terms: L/C, T/T, Money Gram, Western Union

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Basic Info
  • Model NO.: WL-228W
  • Usage: Gas
  • Certification: CE, RoHS
  • Style: Wireless
  • Color: White
  • Guarantee: 3 Years Guarantee
  • Programme: 1527/2264
  • Trademark: WALE/OEM
  • Origin: Shenzhen, Guangdong
  • Type: Probe
  • Installation Mode: Ceiling Mounted
  • Application: Home, Industry, Communication Electronic Products, Special Equipment
  • Dimension: 106*36mm
  • Quality Certificate: CE &RoHS
  • Static Current: ≤10ua
  • Power Supply: 9VDC
  • Specification: CE, ROHS
  • HS Code: 8531100000
Product Description
Wireless Photoelectric Fire Smoke Detector

1. Stable and reliable performance
2. Moisture-proof
3. Cost effective of the wireless photoelectric smoke (fire) detector


1. Optoelectronic detection methods
2. The use of low-power CMOS microprocessor
3. A special moisture-proof design
4. The wireless photoelectric smoke (fire) detector with manual testing, manual reset function
5. Stable and reliable performance
6. The use of ultra-thin structure design
7. The structural design of unique, dust, pest control, anti-light interference to the outside world

Working voltage9V/12VDC
Working Current3mA
Alarm Current25mA
alarm volume85dB at 10 ft
sensitivity2.06% ft ± 1.3% ft;
monitoring area20sqm

How Smoke Detectors Work

A very simple device that has saved thousands of lives is the smoke detector. It also probably goes off every time the cook of the house makes pancakes or grilled cheese sandwiches.

A smoke detector is basically just an electrical circuit that gets interrupted or at least disturbed by particles. The circuit runs through a chamber where there is a very small separation between two electrodes. The electricity "jumps" across this open space. The current goes around and around. Meanwhile the microchip monitors the flow of electricity. As long as the flow is constant it does nothing.

It has been said that where there is smoke there is fire. It is even more true that where there is fire there is smoke. A fire sends little particles into the air. When these particles reach the smoke detector, they go through the little chamber where the electrons are flying from one electrode to the other. The smoke particles interfere with this flow enough to alert the microchip. The microchip is programmed to send a signal to the alarm. The alarm sounds and either someone takes a frying pan off the stove and silences the alarm or everyone exits the house in an orderly fashion and waits for the fire department to handle the blaze.
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