Winsen ZE03-CL2 GAS Sensor Module


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SKU: 1766673
  1. Model No: ZE03
  2. Target Gas: Chlorine (CL2)
  3. Working Voltage: DC 4 Volts to 9 Volts
  4. Working Current: < 5 mA
  5. Size : ø23.5 mm x 24.5 mm


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1 Year Warranty
6 Months Warranty Against Sealed Product
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Brand: Winsen
Category: Gas and Dust Sensor

ZE03-CL2 Gas sensor can be used to measure Chlorine gas concentration in the atmosphere. This is an Industrial-grade sensor and is very easy to interface to your Microcontroller, Arduino as well as Raspberry Pi as they have linear Analog output as well as UART output (3 volts).
ZE03 Series of Gas Sensor Modules by Winsen is a general-purpose and high-performance electrochemical module. It uses three electrodes, an electro-chemical gas sensor, and a high-performance microprocessor. By using this GAS Sensor you will be able to Monitor the concentration of Chlorine gas.
It is with built-in temperature sensor to make temperature compensation, which makes it more accurate to detect Chlorine gas concentration. It has the digital output as well as analog voltage output at the same time which facilitates the usage and calibration and shortens the development period. It is a combination of mature electrochemical detection principles and sophisticated circuit design, to meet customers’ different detection needs.


  1. High sensitivity & resolution
  2. Low power consumption
  3. UART and analog voltage output
  4. Good stability and excellent anti-interference ability
  5. Storage Environment Temp. : 20~25°C
  6. Storage Environment Humidity. : 30%RH-70%RH
  7. Operating Environment Temp. : -20~50°C
  8. Operating Environment Humidity. : 15%RH-90%RH (no condensation)

Package Includes:

1 x Winsen ZE03-CL2 GAS Sensor Module

SKU: 1766673 Category:


Target Gas

Chlorine (CL2)

Working Voltage

DC 4 Volts to 9 Volts

Working Current

< 5 mA

Size (mm):

ø23.5 mm x 24.5 mm

Working Life

2 year

Output Data

UART Output (TTL electrical level, 3 Volts) and Analog Voltage

Detection range

0~20 ppm

Output Voltage (VDC)

2 – 0 Volts

Response Time(s)


Decimal point of serial port

1 byte

Shipping Weight 0.015 kg
Shipping Dimensions 9 × 7 × 4 cm
6 Months Warranty Against Sealed Product

This item is covered with a standard warranty of 6 Months from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Warranty  Against Sealed Product:

This product comes with manufacturer seal so, warranty Policy shall cover only those issues pertaining to the manufacturing defects in the product. In any other case, No return will be accepted if the seal is broken.

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Country Of Origin: China