Mobeye ThermoGuard TwinLog CML4275 Temperature Monitor

Brand: Mobeye

 430,00 ( 355,37 excl. VAT)

In stock.

The Mobeye ThermoGuard TwinLog CML4275 is a highly accurate temperature monitor designed for use in outdoor and industrial settings. The integrated communication module can connect to both the 4G LTE-M and 2G networks.

  • Communication module: 4G LTE-M, 2G Fallback
  • Inputs: 2x digital temperature input
  • Outputs: 1x open collector (200mA)
  • Temperature range: -35 to +70 degrees Celsius (sensor)
  • Power input: battery-operated (with option to connect 12VDC power source)
  • Batteries: 2x CR123 (lithium 3,0V) included, optional: battery pack (battery life 4 yrs)
  • Dimensions: 130 x 180 x 35 mm
  • Enclosure: IP66

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Mobeye ThermoGuard TwinLog CML4275

The Mobeye ThermoGuard CML4275 is a reliable temperature monitor housed in a robust industrial enclosure. It notifies the contacts if the temperature is too high or too low. It records the temperature and sends the data to an online portal where it can be viewed as a graph and table. The integrated communication module can connect to both the 4G LTE-M and 2G networks.

The Mobeye ThermoGuard TwinLog is a highly accurate temperature monitor designed for use in outdoor and industrial settings. When the temperature deviates from the set limit values, an alarm message is generated. Furthermore, it logs temperature values at a user-specified interval and displays them in the online portal. The CML4275 includes a reliable temperature sensor as well as the option for a second one. The device is either entirely battery-powered or requires external power.

If the temperature or one of the inputs indicates an alarm status, the CML4275 sends an alert via the app (IOS/Android), telephone call (voice message), text message and/or e-mail. The contact persons can be specified, and the alarm message can be customised.

When using the Mobeye Internet Portal, you can access the log functionality. The logged temperature values are sent to the portal on a regular basis and after an alarm, where they are displayed in table and graph form.

The Mobeye ThermoGuard TwinLog can run for over a year on a single set of batteries. It also sends “power failure” notifications when using an external power source (12-24V DC or mains).

Key Features

  • Alarm via app, call, SMS and e-mail
  • Temperature alarming and logging
  • Power failure monitoring (if powered externally)
  • Two NO/NC alarm inputs, output, siren
  • Full insight into device when connected to Mobeye Internet Portal

Logging, alarming and reporting for the industry

The Mobeye ThermoGuard TwinLog CML4275 is a solid and compact unit for monitoring temperatures, in industrial, pharmaceutical, retail, and other professional environments.

The Mobeye ThermoGuard TwinLog can run on batteries for a long time and is therefore independent of an external power source. If an external power source is available, it is recommended to connect it. The availability of the power supply is then monitored. It will also send power failure alarms. In the event of a malfunction, a message will be sent. The batteries take over and the CML4275 continues to monitor and send alarm messages. A notification will be sent once power is restored.

The delivery is including batteries, excluding mains adapter. A suitable external power supply is the country-specific Mobeye 500mA 12VDC adapter, available with EU power socket, UK power socket and USA power socket.

Night Frost Detector

In consultation with horticulturists, functions have been added for use as a night frost detector. In the cold spring, when the buds come out, the grower receives specific information about the temperature in the field. With a critical zone and an alarm zone, the alarm messages become even more meaningful and the graphs are updated in a timely manner.

Smart Data Transfer Option of the CML4275
During the flowering period, this detector with its Smart Data Transfer option offers optimal insight into the temperature values. Once the outside air enters the critical temperature zone, the logging and synchronisation frequencies are automatically increased. And when the warning limit is reached, there is an immediate telephone warning and the map is updated every few minutes. In addition, an hour counter provides insight into hot and cold hours.

How it WorksCML4275 how it works

The Mobeye CML4275 continuously measures the temperature values and logs these periodically. In this way you are fully informed about alarm situations and the complete temperature trend.

  1. Place the sensor at a location with a stable temperature, in the shadow, or not too close to the cooling element or heat source.
  2. Set the temperature limits and log frequency and choose contacts for the notifications.
  3. If it gets too cold or too hot, the ThermoGuard TwinLog CML4275 sends alarm messages to the contacts. The logged values and trend can be viewed online in table and graph form.

Typical applications for the Mobeye ThermoGuard TwinLog CML4275

The instant alarm, periodic logging, remote insight and industrial IP66 enclosure make the CML4275 suitable for professional applications such as agriculture (heat alarm, heat hour counter, night frost) and conditioned storage.

Other examples are:

  • medicine storage
  • laboratory temperature monitoring
  • food storage
  • ingredients storage
  • distilleries
  • ICT server room
  • stores
  • agriculture
  • industrial processes





  • CML4275
  • 1x digital temperature sensor
  • 2x CR123 batteries
  • SIM card


(Alarm) messages

  • temperature alarm, input alarm, power failure, alarm recovery, battery low voltage, (missed) test report
  • to private contacts via app, call, text message and/or e-mail; local piezo siren


  • temperature value
  • status
  • setting list
  • event history
  • network strength
  • position based on Cell ID

Setting options

  • temperature limits per sensor (between -35 °C and +70 °C)
  • log interval (in min.)
  • interval for data synchronisation (in hours)
  • contact persons (unlimited number) for alarm and service messages
  • message texts
  • repeat cycles
  • input type
  • recovery messages
  • alarm delay times
  • test interval (keep-alive), etc.
  • option for “smart data transfer” for agrarians (night frost ) and counting “heat hours”


  • arming and disarming via button, time schedules and SMS

Temperature sensor

  • 1 meter cable
  • accuracy: 0.5°C between -30 °C and +55 °C, 1 °C outside these limits


  • 2x digital temperature input
  • 2x NO/NC input (potential-free)
  • 1x 12-24V DC (+/- 2V)


  • open collector (at external voltage), max. 200mA. Switches in the event of an alarm or after incoming SMS/call

Power supply

  • 2x CR123 lithium batteries or 12-24V DC (regulated) + 2x CR123 lithium

Battery lifetime

  • > 1 year at normal use (battery operated)
  • > 3 years at normal use (powered externally)


  • IP Code: IP66
  • Dimensions: 130 x 180 x 35 mm


  • 4G LTE-M (worldwide) + 2G EGSM Quad band
    The Mobeye SIM card and Internet Portal provide full functionality and optimum security. The 4G LTE-M network is very reliable and ensures a strong penetration against low energy consumption. 2G is available as a fallback.
  • 2G EGSM Quad band (850/900/1800/1900 MHz)
    When using your own SIM card, the device works (only) on 2G. The operation is “stand-alone”, without using the Mobeye Portal and without the log function. The alarm notifications are sent via SMS and telephone call to (max.) 5 contacts. Programming is done via (simple) SMS commands.

Accessories (not included)

  • 2nd temperature sensor (1m or 10m cable)
  • extension cable (3m, 10m or flat 1m cable)
  • 4 years battery pack
  • mains adapter
  • external antenna

Mobeye SIM, Portal & App service

The Mobeye Internet Portal offers a clear dashboard and essential functions, such as graphs and log values, history, “heat hours”, status and position (Cell-Id), online programming, setting up the messages and push notifications per app. The ‘keep-alive’ monitor offers extra security by monitoring the receipt of test messages. You can activate the supplied Mobeye SIM card online.


Click to open the documents and find more information:

SIM, Portal & App

Every Mobeye monitoring device requires a SIM card for communication. The product comes with a SIM card that can be used for a low cost and immediately provides access to the Mobeye Internet portal. Alternatively, use your own SIM card.

The Mobeye M2M SIM card gives the device full functionality, including the use of the Mobeye Internet Portal and App.

With the Mobeye SIM card, communication takes place over the 4G LTE-M network with 2G as fallback. When you insert your own SIM card, the device uses the 2G network. Alarm messages are then sent via SMS and/or call to max. 5 telephone numbers.

The Mobeye SIM card is PIN protected and only works in a Mobeye device. Please do not put it in another device. For more information about the Mobeye SIM card, see: The rate for the use of the Mobeye Internet Portal and the SIM card you will find here.

Free app for your smartphone
The Mobeye Messages app is available for download from the Google Play and Apple App Stores.

Do you want to use the Mobeye SIM card but it was not included in your package? Ask the MobeyeStore team to supply one by filling out the contact form!

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