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High accuracy Wireless Temperature and Humidity Data Loggers



Volume discounts available
Volume Discount Schedule
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 4 out of 5 by from Does the job Bought this to remotely monitor temperature in a residence. Does essentially what I need it to. Would really like to see an API so I can integrate it into my network more fully. Don't really like to have this information in the cloud.
Date published: 2016-02-12
Rated 4 out of 5 by from Troublesome but Great We had to purchase a new, used computer as our existing ones operated on windows 10, and this product is only compatible with windows 7. This caused quite a bit of frustration, but after spending more money on a computer we did get your monitor working and it is doing the job we wanted it to do. So, having said all that, please let us know when you have a windows 10 version of the product, Thanks, Steven Baker
Date published: 2016-04-01
Rated 2 out of 5 by from Wi-Fi Functionality misleading This unit is supposedly designed for use on a Wi-Fi network, but it doesn't work with the most up to date WiFi encryption (WPA2). Omega happily handled the return, but this is obviously a significant design limitation of this device that should be stated upfront.
Date published: 2018-06-11
Rated 2 out of 5 by from Troublesome, Not Trustworthy, Fails Calibration I've had two of these units, the OM-EL-WIFI-TH and the TH+. They're easy to use and have a nice display. You have to pay $8/mo to monitor them, but the software is nice and has great features. However, if you need a unit that's calibrated this isn't for you. Initial calibration was great. Year 2: failed calibration until they charged it all the way and then it passed. Year 3: failed calibration regardless if it was fully charged or not. Don't buy this if calibration accuracy is important to you.
Date published: 2018-10-19
Rated 1 out of 5 by from Excellent Device for Loggin Data, bad connection I bought this data logger to record the temperatures of the freezer and refrigerator at my company. The set up is easy and the logger pages are great but the device does not stay synced with the PC and would never set up on the cloud. The customer support was great, which attempted to assist me with the issues through a couple of weeks of trouble shooting. Unfortunately I could not resolve these issues. The set up on the PC go through the setup great and the device connects to the network as well as sets up the computer but after a few data downloads by the device it looses connection and cannot reestablish the connection to the network. I get the blinking antenna of death. As for the cloud, I do get through the connection to the Newark but the device continues to fail in the final setup so I never did get the device linked to the cloud. Bottom line, the logging portion of the device is great but the connection side needs work. I will set my calendar reminder to download the data by way of USB every month to retain for records. So do not purchase this device if you would like a wireless data logger because it flat out does not operate properly, which I'm sure there are cheaper data loggers out there that just record with no WiFi or just network wired connection.
Date published: 2016-04-06
Rated 1 out of 5 by from Poor Very Inaccurate RH% in Controlled Enviorment Have used these for 8 years. Some from a few years back are starting to loose the ability to connect to WIFI. Ordered replacement. The new item arrived defective reading +5% lower than actual RH%. Returned product for warranty. After 1 1/2 months product was "verified" out of spec and a replacement was issued. Opened up the replacement......replacement was also out of spec. Customer service unable to provide timely help. Received a bill for the warranty shipping today as well.
Date published: 2023-01-20
Rated 1 out of 5 by from Disappointing. I purchased this temperature logger to replace an old paper chart recorder when I became head of our quality control department. I chose Omega (this unit is rebranded and offered by several companies) because I've used and trusted their products for many years. I've either been fortunate up until now, or Omega has significantly lowered their standards because this is absolute trash. Very tedious to set up on Wi-Fi, and if your company has any security protocols (which, I would imagine most corporations do) forget about setting it up on any kind of network. So, I decided to suck it up and just connect through USB. Now it is having issues simply installing on the PC. I updated the software AND firmware (which is not surprisingly through a third party) and still no luck. Basically I have a $300 digital thermometer.
Date published: 2022-09-24
Rated 5 out of 5 by from Nice device The temperature and humidity device is a nice device and quality product
Date published: 2021-05-09
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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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