Lascar EL-WiFi-TP+

  • WiFi capability and integrated display
  • Wireless connectivity to PC via WiFi
  • Measurement range -40°C to +125°C (-40 to +257°F)
  • Temperature accuracy +/-0.1°C (-10 to +70°C)
  • Main unit IP55, probe IP67
  • Rechargeable internal lithium polymer battery



The Lascar EL-WiFi-TP-Plus WiFi Temperature Data Logger utilizes a high precision sensor to measure the temperature of the environment in which the probe is situated and is accurate to ±0.1˚C. Data is wirelessly transmitted via a WiFi network to a PC and viewed using a free software package. 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 (max 120 days at 10-second sample interval). The range of the sensor can be increased by using WiFi extenders.

The EL-WiFi-TP+ is a low powered battery device. If configured using typical transmission times (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 EL-WiFi-TP-Plus WiFi Temperature Data Logger is a freestanding unit but it can be attached to a wall or vertical surface using the bracket and screws/sticky pad provided.

It is supplied with a thermistor probe with an attachment so that it can be securely fixed to flat surfaces. It is perfect for a wide range of temperature monitoring situations e.g. manufacturing processes, cold storage and hot storage. The probe is removable so alternatives can also be used to meet specific requirements providing they operate within the same temperature range.

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


Specifications Min. Typ. Max. Unit
Battery life >1* Year
USB supply voltage 4.5 5 5.5 Vd.c.
Operating temperature range -20 (-4) +60 (+140) °C (°F)
Logging Period (user configurable) 10 sec 10 min 12 hrs
Transmission Period (user configurable) 1 min 1 hr 24 hrs
Temperature measurement range -40 (-40) +125 (+257) °C (°F)
Temperature measurement resolution 0.01 °C
Temperature display resolution 0.01 °C
Temperature accuracy (-10 to +70°C) ±0.1 °C
Temperature accuracy (-40 to +125°C) ±0.3 °C


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