Application:Home appliance, humidity control, HVAC, dehumidifiers, smart thermostats, and room monitors
Feature:Digital output, standard I²C signal,Quick response and strong anti-interference ability


100% MONEY


Availability: 500 In Stock

Production Description:
ZS21 is a brand new product equipped with a dedicated ASIC sensor chip, a high-performance semiconductor silicon-based capacitive humidity sensor and a standard on-chip temperature sensor, and is connected with a high-performance 8-bit microcontroller to output standard I2C data signals. At the same time, each sensor is calibrated in a high-precision temperature and humidity verification box, so the product has good consistency; ZS21 products use special humidity-sensitive materials, so that their performance is extremely stable in high-temperature and high-humidity environments. It has the advantages of fast response, strong anti-interference ability, and high cost performance.

  • Fully calibrated
  • Wide power supply voltage range, from 2.0V to 5.5V
  • Digital output, standard I²C signal
  • Quick response and strong anti-interference ability
  • Excellent long-term stability under high humidity condition
  • Low power consumption and high precision


  • Home appliance fields: home appliance, humidity control, HVAC, dehumidifiers, smart thermostats, and room monitors;
  • Industrial fields: automobiles, testing equipment, and automatic control devices;
  • Other fields: data loggers, weather stations, medical and other related temperature and humidity detection devices.

Main technical parameters:

Parameter Condition Min Typical Max Unit
Resolution Typical - 0.024 - %RH
Accuracy error1 Typical - ±3 - %RH
Repeatable - - ±0.1 - %RH
Hysteresis - - ±1.0 - %RH
Non-linear - - <0.1 - %RH
Response time2 τ63 % - <8 - s
Scope of work3 - 0 - 100 %RH
Prolonged Drift4 Normal - < 1 - %RH/yr
1. WORLDWIDE SHIPPING (Except some countries and APO/FPO)

We provide Worldwide Shipping by DHL, Fedex, Standard shipping (China Post e-Packet) and some other shipping ways on ALL ITEMS!

2. SERVICE TRANSIT TIME is provided by the carrier.
  • Reference Delivery time (working days):
  • DHL:3-7 days
  • Fedex:3-7 days
  • China Post e-Packet : 15-35 days

Transit times may vary, particularly during the holiday season.

We suggest you choose Expedited Shipping(DHL or FedEx) to ensure the products reach your home fast & safety.

3. ORDERS PROCESSED TIMELY after the payment verification.

We do our best to process & ship all orders as soon as possible. Most orders are processed within 48 hours.


a.We only ship to confirmed order address. Your order address MUST MATCH your shipping address.

b.We accept DROP SHIPPING. You can leave us your customer’s address, when you place an order,then your customers can get the goods directly.


Tracking and secure checkout are provided for all orders. https://www.17track.net/en - this tracking website can help you track the status of your package.


Sometimes you may can't get your package within expected time, please be patient for a few more days. Because we can't control the delivery time or condition when package on shipping. Certainly, we are glad that you can contact us for help. Our goal is to make customer satisfied!

Dear valued friends,

If you have any questions, our Customer Service staffs will be very glad to help you. We try our best to reply to your emails ASAP, however, due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. Please allow 24 business hours for us to response. And you can also call us in +86-18595618735 or email us to enquiry@winsensor.com.

Thank you for your support, I hope everyone has a pleasant business trip in our store, and welcome you to come next!

If you buy more quantity, please contact us.

Buy multiple products by the "Add to cart" we will make the discount for you.