WiFi Temperature Data Logging Sensor

Product Code: HDT-WiFi-T

The HDT-WiFi-T sensor measures the temperature of the environment in which it is situated and is typically accurate to ±0.3°C / ±0.6°F (+5°C to +60°C / +41°F to +140°F).

It is ideal for a wide variety of applications, particularly where remote monitoring is important, including: environmental and weather monitoring, agricultural and livestock, food and drink, building and site monitoring and HVAC.

Data is streamed wirelessly over any WiFi network and can be viewed on a PC using the free EasyLog WiFi software (available for download using the link below) or on the EasyLog Cloud.

During configuration the sensor will search for an existing wireless network whilst physically connected to the PC. It can then be placed anywhere within range of the network. If the sensor temporarily loses connectivity with the network, it will log readings until it is able to communicate again with the PC application or EasyLog Cloud (max 30 days at 10 second sample interval). The range of the sensor can be increased by using WiFi extenders.

The battery can be recharged via a PC using the USB cable provided or via a USB +5V wall adapter (available separately).

The EasyLog WiFi software will allow set-up, data logging and data review. Set-up features include sensor name, °C/°F, sample rate, and high/low alarms. Once configured, historical data can be viewed via the graphing tool or exported into Microsoft Excel.

The sensor is IEEE 802.11bgn (2.4GHz) compliant (MAC Address starting 98:8B:AD:2 only), supports WEP, WPA/WPA2 encryption and enterprise networks (PEAP, TTLS, FAST).

The sensor has a protection rating of IP55. The unit is freestanding, but can be attached to a wall or surface using the bracket provided.

Lascar Product Code: EL-WiFi-T

  • Features
  • Technical
  • Documents
  • Software
    • Temperature data logging sensor
    • -20°C to +60°C (-4°F to +140°F) temperature measurement range
    • Wirelessly stream and view data via WiFi on PC or EasyLog Cloud
    • Easy setup using free EasyLog WiFi PC software
    • View and analyse multiple sensors, including graphing of historic data
    • Configurable high and low alarms with indicator
    • Sensor memory stores all data even if WiFi is temporarily disconnected
    • IEEE 802.11bgn (2.4GHz) compliant (MAC Address starting 98:8B:AD:2 only)
    • Supports WEP, WPA/WPA2 encryption and enterprise networks
    • Capable of logging up to 250,000 data set entries
    • IP55 protection rating
    • Rechargeable internal lithium polymer battery
    • Max and Min readings
    • Low battery indicator
    • WiFi connection indicator
    • USB port for recharging
    • Supplied with wall bracket and USB cable (Type A to Micro B)
  • Technical Details
    Battery Life > 6 months typical under ideal conditions
    USB Supply Voltage 4.5V D.C. (min), 5V D.C. (typical), 5.5V D.C. (max)
    Operating Temperature Range -20°C to +60°C (-4°F to +140°F)
    Logging Period (user configurable) Every 10 seconds (min), 10 minutes (typical), 12 hours (max)
    Transmission Period (user configurable) 1 minute (min), 1 hour (typical), 24 hours (max)
    Temperature Measurement Range -20°C to +60°C (-4°F to +140°F)
    Temperature Measurement Resolution 0.1°C (0.2°F)
    Temperature Display Resolution 0.5°C
    Temperature Accuracy  ±0.3°C / ±0.6°F (+5°C to +60°C / +41°F to +140°F) typical
    ±0.8°C / ±1.6°F (-20°C to +60°C / -4°F to +140°F) max 
    Unit of Measurement  °C, °F
    Dimensions (excluding bracket) 82mm (H) x 70mm (W) x 22mm (D)


    Battery life is dependent on a variety of factors such as transmission period, WiFi encryption method, sampling rate, operating temperature etc.

  • Free EasyLog WiFi  software

    Free EasyLog WiFi software

    Easy to install and use, the EasyLog WiFi software allows connection of sensors to a WiFi network. The user can select where data is stored during the setup process (computer or cloud). EasyLog Cloud accounts can be created during setup.

    Compatible with 32-bit and 64-bit versions of Microsoft Windows 7, 8 and 10

    EasyLog Cloud App (Android)

    EasyLog Cloud App (Android)

    The EasyLog Cloud app extends the ability to remotely access your data from WiFi sensors to Android users. All the convenience of the EasyLog Cloud, now in your pocket with new features just for the App.

    EasyLog Cloud App (iOS)

    EasyLog Cloud App (iOS)

    The EasyLog Cloud app on the App Store allows you to remotely access data from your WiFi sensors on your Apple iPhone and iPad.

Note: supplied product colour may vary from image shown