Lascar EL-WiFi-TH-Plus

  • Temperature and humidity data logging sensor
  • Measurement range: -20 to +60°C (-4 to +140°F)
  • Temperature accuracy: ±0.2°C (0 to +60°C)
  • Humidity accuracy: ±1.8% (10 to +90%RH @+25°C)
  • WiFi capability and integrated display
  • Wireless connectivity to PC via WiFi
  • Easy sensor set-up using free PC software
  • View & analyze multiple sensors using the PC application, immediate graphing of historic data



The Lascar EL-WiFi-TH-Plus WiFi Temperature Humidity Data Logger measures the temperature and humidity of the environment in which it is situated. This high accuracy version is accurate to ±0.2˚C (0 to +60°C) and ±1.8%RH (10 to 90%RH @ +25°C). Data is transmitted wirelessly via a WiFi network to a PC and viewed using a free software package or on the EL-WiFi-Cloud. During configuration, the sensor will search for an existing wireless network while 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 Cloud (max 30 days at 10-second sample interval). The range of the sensor can be increased by using WiFi extenders.

The Lascar EL-WiFi-TH-Plus is a low powered battery device. When configured using typical transmission periods (e.g. once every 5 minutes) the sensor will operate for over one year (at room temperature). The battery can then be recharged via a PC or USB +5V wall adapter using the USB lead provided or can be permanently powered by the USB wall adapter.

The sensor is a freestanding unit, however, it can be attached to a wall or vertical surface using the bracket and screws / sticky pad provided.

Requires 802.11b compliant WiFi router/network. Compatible with Enterprise Networks from September 2013

The Lascar EL-WiFi-TH-Plus is suitable for a wide variety of applications, particularly where remote monitoring is important, these include:

  • Environmental and weather monitoring
  • Agricultural and livestock
  • Food & drink
  • Building & site monitoring
  • HVAC


Specifications Minimum Typical Maximum Unit
Battery Life >1*
USB Supply Voltage 4.5 5 5.5 Vdc
Operating Temperature Range -20(-4) +60 (+140) °C(°F)
Temperature Measurement Range -20 (-4) +60 (+140) °C(°F)
Humidity Measurement Range 0 100 %RH
Temp Measurement Resolution 0.01 °C
Humidity Measurement Resolution 0.1 %RH
Temperature Accuracy ±0.2 ±0.8 °C
Humidity Accuracy ±2.5 ±4.0 %RH
Logging rate (user configurable) 10s 10m Every 12hrs Transmission rate
Logging period (user configurable) 10s 10m 12 hrs


The EL-WiFI loggers are not supplied with software, however the control software is downloadable, free-of-charge from the Lascar website. The software is compatible with Windows XP, Vista and 7 (including 64-bit operating systems). Note, the software is not compatible with Mac or Linux.

Cloud Storage Service


Now you can communicate with your sensor on any smartphone, tablet or PC, anywhere in the world. Monitor conditions, change sensor settings and receive email alerts instantly. Visit to download WiFi sensor software onto your PC and sign up for a Cloud account.

Features include:

  • Change settings or view data from any sensor on any web-enabled device including smartphone, tablet or computer
  • Receive email alerts if required on breaches in temperature and humidity levels, low battery warnings, AC mains disconnection or probe malfunction
  • Cloud-based storage means data is protected, secure and limitless
  • Link sensors from multiple sites in one account
  • Allow multiple users Cloud access. Determine which users have access to which data and assign account privileges