Target: Environment relative humidity,temperature
Model: MS-Z3
Detection principle: Made of polymer humidity-sensitive material
Characteristics: 1、Wide humidity detected rang;2、Fast response;3、Small Humidity hysteresis error;4、Simple manufacture;5、Easy integration;6、Low cost

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In wet conditions, water molecules are adsorbed by polar group on the surface of martial. And as the humidity increases, the quantity of water molecules will be changed accordingly. The adsorbed water is gradually condensing and coming into be liquid, which is electrolyte solution with current channel quality.
With the humidity increasing, macromolecule will swell, interior free volume will be bigger, carrier will be increased and the activated energy of macromolecule polyelectrolyte counter-ions will decrease, drift mobility will increase and impedance will decrease. And then when humidity decreases, water molecules are released from ion polymer and the resistor of material will increase. The environment humidity can be monitored through testing the impedance.


Humidity sensor, as an important chemical sensor, which is widely used in fields of warehousing, industry production, and process control, environmental monitoring, home appliances and meteorology etc.


  • Wide humidity detected rang
  • Fast response
  • Small Humidity hysteresis error
  • Simple manufacture
  • Easy integration


  Temperature Humidity
Working range 0~60°C 20~90%RH
Storage range -25~70°C ≤90%RH (non condensation)
Detection range 10~90%RH(0~60℃)
Rated voltage 1.5V AC(MAX, sine wave)
Rated power 0.2mW(MAX, sine wave )
Working frequency 500Hz~2kHz
Nominal value&range 31 (20~50) KΩ(60%RH, 25°C)
TemperatureCharacter ≤0.5%RH/°C
Hysteresis ±2%RH
Response time Moisture absorption:≤30s Dehumidification:≤40s
Stability 2%RH/year
Accuracy 3%RH

* The description and specifications might be changed without notice. Please contact us for the latest information before placing orders.

Technical Support:

Customized technical design and function, LOGO and package are available without extra charge (including molding fee) for mass volume.

The sensors don't have sleeping mode. It can be set in program if needed.

All Winsen products go through strict inspections and tests to make sure they are 100% qualified before shipping out.

The sensor has been fully tested (not calibrated) before leaving the factory. However, after transportation and storage, the environment conditions change, and the surface of the sensor absorbs moisture, mixed gas, pollution matters, etc. It is recommended that customers perform aging and calibration after sensors become stable according to the program and use occasions of the whole device.

15﹪-90﹪RH without condensation,greater or less than this range or long-term high temperature and high humidity will affect the life of the sensor.

Our sensors are certified with CE, 3C, ROHS, anti-explosion, fire prevention, and coal mining safety according to different applications. And we provide assistance for new certification.

Many factors can cause the sensor to fail such as broken wires in transportation, poisoning, falling off of the sensitive material, damage to the heating wire (device), etc. Please find specific cause in each category with Winsen’s aftersales.

Winsen provides professional consultation and service before and after sales. We will recommend the best fitting sensor for your demand. If you have any problem, don’t hesitate to email us to

Due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. But we will reply to your inquiry in 24 business hours.