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High accuracy Wireless Temperature and Humidity Data Loggers



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Quantity Price each
1-4 $305.73
5-9 $290.44
10-24 $284.33
25-49 $272.10
50-99 $265.99
100+ $259.87

In stock

Lead Time (If not in stock): 7 weeks
High accuracy Wireless Temperature and Humidity Data Loggers OM-EL-WIFI-TH OM-EL-WIFI-TH
  • OM-EL-WIFI-T Wireless Temperature Data Logger with Internal Temperature Sensor
  • OM-EL-WIFI-TH Wireless Temperature/Humidity Data Logger
  • OM-EL-WIFI-TP Single Channel and OM-EL-WIFI-DTP-PLUS Dual Channel Wireless Temperature Data Logger with Removeable Thermistor Probes
  • OM-EL-WIFI-TC Single Channel and OM-EL-WIFI-DTC Dual Channel Thermocouple Input Temperature Data Loggers

OM-EL-WIFI-TH Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Measurement Type
Number of Measurements
Input Type
Maximum Samples
Additional Feature
Data Interface
Max Sampling Rate


The OM-EL-WIFI-TH wireless temperature/humidity data logger measures the temperature and humidity of the environment in which it is situated via internal sensors. The OM-EL-WIFI-TP (single channel) and OM-EL-WIFI-DTP-PLUS (dual channel) wireless temperature data loggers measures temperature via the included removable thermistor temperature probes. The OM-EL-WIFI-T wireless temperature data logger measures temperature via an internal sensor. The OM-EL-WIFI-TC (single channel) and OM-EL-WIFI-DTC (dual channel) wireless thermocouple input temperature data loggers accept a type J, K, T or N thermocouples. Data is transmitted wirelessly via a WiFi network to a PC and viewed using a free software package.

During configuration the data logger 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 data logger temporarily loses connectivity with the network, it will log readings until it is able to communicate again with the PC application (max 60 days at 10 second sample interval for OM-EL-WIFI-TH) (max 120 days at 10 second simple interval OM-EL-WIFI-TP, OM-EL-WIFI-T and OM-EL-WIFI-TC (max 30 days at 10 second sample interval for OM-EL-WIFI-DTC and OM-EL-WIFI-DTP-PLUS). The range of the data logger can be increased by using WiFi extenders. The probe on the OM-EL-WIFI-TP and OM-EL-WIFI-DTP-PLUS can be used in a wide range of temperature situations e.g. manufacturing processes, cold storage and hot storage.

The OM-EL-WIFI Series are low powered battery devices. When configured using typical sampling periods (e.g. once every 60 seconds) the data logger will operate for over one year. The battery can then be recharged via a PC or USB 5V wall adaptor using the USB lead provided. The battery is safely charged when the unit is operating between 0 to 40°C (32 to 104°F). It is protected against charging outside this temperature range. Data logger readings may be inaccurate during battery charging.

With the OM-EL-WIFI Series the software installed on the PC will allow set-up, data logging and data review. Set-up features will include data logger name, °C/°F, sample rate, and high/low alarms. Once configured, historic data can be viewed via the graphing tool or exported into Excel. This software is available for free from OMEGA. The OM-EL-WIFI-TP (single channel) and OM-EL-WIFI-DTP-PLUS (dual channel) wireless temperature data loggers are supplied with removable thermistor temperature probes. The probe can be attached to a wall or other flat surface using the included mounting bracket (probe clips into the bracket).
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Rated 5 out of 5 by from CEO Excellent for control temperature and humidity in my pharmaceutical facility .
Date published: 2020-11-19
Rated 4 out of 5 by from Accurate, great data This is a great unit - we checked it against a two different test kits and it reads within posted limits. The wifi does drop out sometimes, so if you insist on 100% realtime data that will bug you, but it will eventually pick up and post all measurements. I love the graphs and statistics that the software shows.
Date published: 2020-04-15
Rated 4 out of 5 by from Good hardware, latest software has issues This is my 2nd OM-EL-WIFI unit and I love the accuracy and wifi capabilities of the unit. I updated to the latest software release and could not get either unit (one's a Plus) to save the data. I called tech support and they sent me a document outlining specifics steps to take, but still no go. I went back to the previous software release ( and they work fine now.
Date published: 2018-04-11
Rated 3 out of 5 by from Work ok Bought 4 units to keep track of humidity in an older school building. Units drop the wifi connection frequently even though the signal strength is a 6 (out of 10) or better. Frequent interruption of the data collection.
Date published: 2016-08-15
Rated 5 out of 5 by from Great Instrument I've purchased several of these over the last couple years for our lab. They work great, the WIFI is convenient, and having the real time data tracked 24/7 has been valuable.
Date published: 2016-02-15
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How to switch units from °F to °C

Asked by: glenn A
Hi, to advise on your question, please see section 7.4 of the manual at the following link to change the units on your logger: Thank you!
Answered by: Jane
Date published: 2019-06-25

Which thermometer would respond more quickly, the OM-EL-WiFi-TP or the OM-EL-WiFi-TC, and how long would it take to get a stable reading?

Asked by: Allan
Hello Allan, response time is at least 60 minutes before your readings are at full accuracy.
Answered by: PVDAS
Date published: 2019-11-16

Does this require a constant wifi connection? Or can it store measurements internally for them to be uploaded later, once a wifi or bluetooth connection is re-established? Planning to use somewhere that may not have wifi available.

Asked by: ascott
Thank you for your question. It does not need constant WIFI connection. If you close the software the unit will go into sleep mode but continue to log data.
Answered by: Application Engineer PV
Date published: 2022-09-26

Is there a labview driver for this instrument?

Asked by: Wad8
Hello, thank you for your inquiry. Unfortunately LabView drivers are not available for this series.Omega do have other options that include such drivers and we would love to discuss your application to help you find a suitable solution. Please give us call or send us your requirements to
Answered by: DA Engineer
Date published: 2020-05-14

is there a calibration certificate coming with instrument, and If so, is it traceable to ILAC-MRA standards?

Asked by: paulo
Hi, thanks for connecting with us. The calibration certificate is an additional purchase. If you order this at the time of purchase, it would come with the logger. Yes, our certificates are NIST traceable as well as traceable to ILAC-MRA standards. MDQ Calibration Laboratory is accredited to ISO 17025:2005 by PJLA which is an MRA Signatory of ILAC. The insignia for both ILAC-MRA and PJLA are included on our calibration certificates. Please contact us if you have any further questions.
Answered by: Jane
Date published: 2019-05-01

What is the fastest reading interval I can get on any model of this data logger for a type K thermocouple at high temperatures?

Asked by: sbajaj
Thank you for your question. Logging Rate: 1 reading every 10 seconds to 1 every 12 hours
Answered by: Application Engineer PV
Date published: 2023-06-22

what is the frequency of calibration required for these units (OM-EL-WIFI-TH-PLUS). Do you do the calibration or 3rd party?

Asked by: jrfeasby
We recommend that these units be calibrated at least once a year, depending on usage. You can have them calibrated by us.
Answered by: JA Engineer
Date published: 2022-01-13

Are there temp/humidity sensor options that allow for a real-time export of the data or a configurable XML output to a local port?

Asked by: JoeS
The logged data from the OM-EL-WIFI unit can be imported to EXCEL after it is displayed on PC. You cannot import real-time. Thank you.
Answered by: Application Engineer
Date published: 2019-07-11

Could i read the data by C# or python? Is any file created when a measurement is done?

Asked by: PandraPanesa
Thank you for your question. Unfortunately, there is no programming protocol available for this device just supplied software or the cloud.
Answered by: Application Engineer PV
Date published: 2022-07-22
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USB power adaptor for recharging any OM-EL-WIFI series data logger (120 Vac input, 5 Vdc/1 A output via standard size USB type A connector)
11 In Stock
Thermistor probe extension cable, 1.5 m (5') for OM-EL-WIFI-TP and OM-EL-WIFI-TPPLUS
0 In Stock
Thermistor probe extension cable, 10 m (33')
0 In Stock
Thermistor probe extension cable, 5 m (16.5') for OM-EL-WIFI-TP and OM-ELWIFI-TP-PLUS
0 In Stock
Audible and visual alarm for OM-EL-WIFI Series data loggers
10 In Stock
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