CWT(HK) Co., Limited



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Home ProductsWIFI Temperature Data Logger

T20 WIFI GPRS Temperature and Humidity Data Logger

T20 WIFI GPRS Temperature and Humidity Data Logger

    • T20 WIFI GPRS Temperature and Humidity Data Logger
    • T20 WIFI GPRS Temperature and Humidity Data Logger
  • T20 WIFI GPRS Temperature and Humidity Data Logger

    Product Details:

    Place of Origin: China
    Brand Name: CWT
    Certification: CE
    Model Number: T20

    Payment & Shipping Terms:

    Minimum Order Quantity: 1 unit
    Price: 130USD
    Packaging Details: 1 unit per box
    Delivery Time: 3 days after payment
    Payment Terms: T/T, Wstern Union, Paypal
    Supply Ability: 5000pcs per month
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    Detailed Product Description

    Skype:   WhatsApp: 0086-13420971345


    The temperature and humidity of refrigerator & freezers used for storage of critical goods such as, cold room, warehouse, medicine, vaccine etc. need to be continuously monitored and recorded. If the temperature goes above or below the permitted temperature levels, the operating personnel need to be alerted as well so that the items can be well protected.


    We have various real time monitoring solutions which will continuously monitor Temperature and Humidity of the area. The data will be continuously recorded on the device, on a computer as well as over the internet and

    will be continuously backed up. The sensors can be correctly placed after conducting a Temperature Mapping study of the enclosed ares which will identify potential hot spots.

    Typical applications are :

    • Cold room for medicines, vaccines etc.
    • Cold Storage for food, meat etc.
    • Warehouses for medicines,food or for any other purpose
    • Walk in Chillers for food or medicines
    • Patient Rooms in hospitals
    • ICU in hospitals
    • Operation Theater in hospitals

    CWT Web Server Screenshot





    Power supply: DC12V/1.5A
    Inside temperature measure rang: -40°C ~ +125°C, accuracy±0.3°C
    Inside humidity measure rang: 0~100%RH, accuracy±2%
    External temperature probe measure rang: -55°C ~ +125°C

    External humidity probe measure rang: 0~100%RH
    GSM quad-band, applicable worldwide
    Working temperature: -40℃~+70℃
    Relative humidity: 10-90%, No condensation
    Exterior dimension: 130×130×19mm
    All-aluminum panel

    2 wired inputs for alarm, configurable alarm/recover SMS
    3 relay outputs (DC220V 2A / AC125V 2A)
    Power failure/recover alarm
    Built-in lithium-ion battery (500mAh/3.7V) which can last 6 hours
    Alert buzzer and light
    Adopted highly integrated industrial ARM MCU
    Reliable performance with built-in double watchdog
    User programmable PC suite
    Low maintenance, 24×7 operation


    Setting Temperature High and Low Range, and Temperature Alarm Parameters:


    T20 .jpg




    WIFI Access

    View Temperature Humidity data on APP

    Control relay on APP

    Realtime logging Temperature Humidity data



    3 relay outputs

    inside timer to program relay output


    Data Logger

    Inside temperature and humidity sensor

    4000pcs temperature records

    PC software program


    SMS Operation

    Preset 10 authorized phone numbers

    SMS alarm

    Control relay via SMS

    Check current temperature via SMS


    GPRS Communication

    TCP/IP connect 4 internet servers

    Http:post, CWT I/O protocol, Modbus TCP

    Realtime data logger


    Function Specification


    T20 front.jpg

    manual.jpgT20 pi.jpgright.jpg


    Program Software Screenshot- Adding WIFI Address:




    Program Software Screenshot-Adding High/Low Temperature Range:




    Program Software Screenshot-Adding Basic Parameters:



    Contact Details
    CWT(HK) Co., Limited

    Contact Person: Ms. Glare Wang

    Tel: +86-755-26719943-8006

    Fax: 86-755-26719943-8059

    Send your inquiry directly to us (0 / 3000)