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High Stability Environment Monitoring System 4 Wire DC 32~52V Relay Output Alarm

China Tianjin Estel Electronic Science and Technology Co.,Ltd certification
China Tianjin Estel Electronic Science and Technology Co.,Ltd certification
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In the past three years, our cooperation is very cheerful, thanks for your company's technical support and patient service, the end user is very satisfied with the quality of outdoor telecom cabinet with cooling. Best wishes to our future cooperation.

—— Anthony

Timely response, professional skills, rigorous attitude, fast delivery, we are very satisfied, cooperation is very smooth.

—— Manish

From 1 sample to 45 sets, 76 sets, 200sets, we gradually established a strong trust. The cabinet quality is good and the design is reasonable.

—— Parmar

The air conditioner have been running for one and a half years. Cooling effective is good. Good after-sale service, and patiently instruct to use and solve technical problems. Environmental monitoring system is also running well, and remote monitoring the cabinet is very convenient.

—— Luis Alberto

The boxes are great we happy with it. We will order 30 sets each month in future. Cooperate Happily.

—— Andrej Sliachin

Always can provide us good suggestion and solution, we are very grateful.

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High Stability Environment Monitoring System 4 Wire DC 32~52V Relay Output Alarm


Large Image :  High Stability Environment Monitoring System 4 Wire DC 32~52V Relay Output Alarm

Product Details:
Place of Origin: Shenzhen, China (Mainland)
Brand Name: ESTEL
Certification: ISO9001, CE, 3C, FCC, TLC,
Model Number: S03 -A4
Payment & Shipping Terms:
Minimum Order Quantity: 1 set
Price: Negotiation
Packaging Details: Carton/wooden case
Delivery Time: 10 working days
Payment Terms: T/T, L/C,D/A, Western Union, Paypal, etc
Supply Ability: 8,000 sets per month
Detailed Product Description
Working Voltage: DC32~52V Working Temperature: -10℃~+50℃
Alarm Output: Relay Output Alarm Indication: Red LED Always On
Usage: Industrial Dimension: 103mm Diamcter * 53mm Deep
High Light:

environmental monitoring systems


environmental monitoring unit

4 Wire DC32~52V Security Monitoring System Photoeleciric Smoke Detector  
1. Prodcut Instruction

This product named Photoeleciric smoke detector(hereinafter called detector) delecis 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 allains 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 4-wire detectors.

2. Product Specification

Working voltage DC32~52
Standby current

 2mA (48V NO) ;
 13mA (48V NC)

Alarm current

 16mA (48V NO)
  6mA (48V NC)

Alarm indication  Red LED on
Humidity  0%-95% RH(no condensation)
Working temperature  -10℃~+50℃
Contact rating 100mA@DC28V
Alarm output

 Relay output

Sensitivity 0.5db/m (±0.1db/m)
External dimension 103mm diamcter*53mm dee

3. Connection Description

4 wire smoke detectors :


“1” and “2” for DC power input, non-polarized .

”3” for relay output com.

“4” for relay output N.C. or N.O.
4. Prodcut Features

  • Strong adaptability for circumstance
  • SMT design,High stability
  • 32-52VDC wide voltage operating rance 
  • Low standby current
  • Power supply non-polarizedinput
  • Twin LED for 360 degree visual
  • Flashing LED power indicator
  • Anti-electromagnetic interference.

5. Product Diagram


 High Stability Environment Monitoring System 4 Wire DC 32~52V Relay Output Alarm 0

6. Notice


1. The detector can not be installed under worse environment. E.g. coldest, hottest, dusty, do not move away the dustproof cover untill use the detector indeed.

2. Make sure that there is no block within 0.5m from detector.

3. Keep the distance between detector and wall more than 05 . m.

4. Make sure the distance between detectors be less than 15m. And the distance between detector and corner must be less than half of the one between detectors.

5. Horizontally install the detector. If have to be installed slantingly, please keep the angle less than 45 degrees)

6. Deteclors base be installed solid, wire connections must be reliable.

7. Recommendations should be carried out every six months a simulated fire test, the test detectors are working properly.

8. For various reason, including, but not limited to changes in environmental conditions, electric disruptions and tampering, the product may not perform as expected, The user is advised to take all necessary precautions for his/her safety and the protection of his/her property.

Contact Details
Tianjin Estel Electronic Science and Technology Co.,Ltd

Contact Person: Fiona

Tel: +8613752765943

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