Wireless Temperature Logging

4x faster than USB

Record Temperatures

Press the button to start recording.

The loggers are delivered pre-set with your requirements of logging period and email addresses so there's no setup required.

Download Data

Android or iOS devices can download the data over Bluetooth within seconds.

With the app open on a smartphone with Bluetooth the data is downloaded and automatically uploaded to the Cloud.

View and Share

Within seconds you can view your data on the web.

The web console allows you to view your data, share it with others and download it as a CSV to analyse further.

Product Specification



Need more than 5?

Please contact us for a quick quote for larger quantities


Latest News

Temperature Monitoring Guide

Temperature loggers are devices which monitor the temperature and record it at regular timed intervals. Hundreds of different loggers exist in the market and they don’t all record the same type of information that you might expect. On this page we are referring mainly to portable loggers and not data loggers designed to be fixed in place permanently.

Devices used to monitor shipments and valuable cargo and assets fall into the general categories of temperature indicators, temperature loggers and chart recorders.

Chart Recorders

Pre-dating any electronic loggers, a temperature chart recorder is a mechanical device that records the temperature onto a piece of paper or ‘chart’. These may be in the form of a strip or a circular piece of paper and can be driven purely mechanically with clockwork or electro-mechanically with a battery driving the device. They are still used in some applications but are much larger than electronic equivalents and labour intensive to review the data as you need to manually read it on paper.

For more information, the Wikipedia article, Chart Recorders has some interesting facts on their history.

Temperature Loggers

An electronic device which monitors and records the temperature over time.

Once the logger is recording you want to download that data from the logger onto your computer or at least be able to view it and this is where loggers start to differ. The industry standard is USB and has been for the past two decades but below is the complete list of other communication types available and the future options.


This is the most common type of logger and requires you to plug the device into a computer, at which point some products produce a PDF report automatically or using pre-installed software you can interrogate the logger, view the data or change settings and reset the device to use again.

Security is a major problem with USB, a number of companies are now introducing a policy that no external devices can be plugged in to their corporate network and understandably so, hackers can easily infiltrate a system if they can get a device plugged directly into a PC. Especially considering a major market for temperature loggers is the pharmaceutical industry, intellectual property protection and IT security is of the highest importance therefore USB cannot service all customers.


There are a minority of devices in the market which require the user to have a custom hardware adapter, most often at greater expense than the logger itself. Considering the drawbacks to this approach it's difficult to see why this logger type would be chosen over USB or wireless options. Unless a company requires every logger shipped out to be sent back to their offices, this type of interface means a hardware reader will need to be sent to every receiving location and for a large company the volumes and logistics can rack up quickly.

Wireless connection

In today's growing world of technology and wireless products it seems perfectly logical that temperature loggers would also be wireless and accessible from anywhere in the world, so below, we outline what is available in the marketplace today.


Any smartphone available to buy today has BluetoothTM connectivity, why? Because it has been globally adopted thanks to its frequency at 2.4GHz, (the same as a microwave) meaning no country has restrictions on usage of that frequency band and because of its low power consumption. Both iOS and Android devices can connect via BluetoothTM making it globally accessible. These are some of the reasons why we at Smashtag made BluetoothTM our wireless technology of choice for our temperature logger.



Up until recently NFC development has been held back partly by Apple not allowing developers to access the NFC hardware on any iOS devices meaning that any NFC logger could only be downloaded by an Android based mobile or tablet or a custom reader.



There are no wifi based loggers designed for portable use, for example in shipping, and for good reason, WiFi power consumption is around 2 watts or more meaning battery life is going to be very short for anything of a modest size.


Proprietary Radio

In recent years there has been a growing number of products that use a custom radio protocol, this has some big pros and cons. The electronics can be low cost meaning a one time use product can be affordable for most scenarios however the biggest problem is the requirement



A satellite connected temperature logger theoretically could be communicated with anywhere in the world, any time, from anywhere. However the reality is very different, for shipping containers, most of the time it will be in transit and although a satellite signal is the only way of communicating in the middle of the ocean, it is not going to penetrate through numerous steel containers, so unless your container is near the top or sides of the ship, the huge cost of satellite connected loggers will be wasted and cellular as outlined below could be a better option.



A potentially global option for wireless communication from anywhere in the world is a cellular connected logger. Using exactly the same technology as mobile phones, a temperature logger would have a SIM card and would be able to communicate with servers as long as it is in range of the mobile network. This should also be able to provide a reasonable location estimate, perhaps within a few miles or so via triangulation of the cell towers its connected to. The main problem with this is first the cost of the technology but the data plan that is also required for it to work. SIM cards and data plans are expensive so this option only becomes viable if you are guaranteed to get the logger back at the end of its journey or if the shipment is valuable enough to incorporate the loss of the logger.

Lora and SigFox

Known as Low Power Wide Area Networks or LoPWAN

NB-IoT and LTE-M

These are the future of IoT devices and work on the cellular frquency bands and promise to be integreated into existing infrasturtcure meaning theoretically

We at Smashtag see these options as the future, assuming that the promises being made by authorities and service providers are kept, these are the technologies of choice for temperature loggers. 

The Future

Initiatives like IoT (Internet of Things) and others clearly show that the future of temperature loggers is for them to be wirelessly connectable. The problem with most technologies at present is the bureaucracy in the way of advancement. Companies and countries have their own priorities and this is what can hold back wireless technology and products in general but particularly with regards moving assets such as a temperature logger when it is travelling with a shipment from one side of the world to the other.


Until a reliable, globally accessible and low cost technology is available we have to find alternatives which balance productivity and cost. At Smashtag we chose BluetoothTM for this very reason, we believe that the low cost and global compliance makes our logger the best choice that is available for shipping your product across the world and ensuring it is in its best state.

Temperature Indicators

Either electronic or chemical, these devices are more basic than loggers in that they do not record temperature over a period of time but monitor it and indicate that a maximum or minimum value has been exceeded, possibly with a time duration indicator. Vaccine vials have had a chemical indicator

Electronic versions are very simple and usually have an LED to display whether the temperature limit has been exceed.

Smashtag Ltd
B6 Beech House, Melbourn Science Park
Melbourn, Herts,

United Kingdom

01223 881881

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