Mobeye CM4200X Frost Alert

Brand: Mobeye

 310,00 ( 256,20 excl. VAT)

In stock.

The Mobeye Frost Alert system, alternatively referred to as the ThermoGuard Outdoor version CM4200X, provides protection for your plants and trees against frost damage. Stay informed with temperature and frost alerts delivered through phone calls and SMS text messages!

Communication module

4G LTE-M, 2G Fallback


1x digital temperature input, 2x NO/NC inputs

Temperature range

-35 to +70 degrees Celsius (sensor)

Power input

battery-operated (with option to connect 12VDC power source)


2x CR123 (lithium 3,0V) included


130 x 180 x 35 mm

Cable length

1 m



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Mobeye Frost Alert System – Outdoor Temperature Monitoring

frozen blossomAccurate temperature measurement devices and remote frost alarms are essential tools for frost protection. The Mobeye ThermoGuard Outdoor version, also known as the Mobeye Frost Alert CM4200X, plays a crucial role in alerting you to adverse weather conditions that could lead to crop loss. When the temperature remains above the preset minimum limit, no action is required. However, as soon as it falls within the alarm threshold, you’ll receive both a phone call and a text message, providing you with the precise temperature information.

The CM4200X serves as a freeze and temperature alarm dialer designed for various outdoor applications. It is particularly valuable for farmers aiming to safeguard their plants and crops from frost-related damage. During spring, fruit growers and orchardists must protect their orchards and vineyards from potential frost damage and losses. They achieve this by activating irrigation systems and wind machines to create a protective water layer for blossoms. The Mobeye Frost Alert ensures that frost warnings are promptly delivered when temperatures drop too low.

The Mobeye ThermoGuard CM4200X offers continuous temperature monitoring and alerts farmers when temperatures become critically low. This battery-powered alarm system can call and/or send texts to pre-defined telephone numbers when the temperature falls below the critical threshold. Its IP66 waterproof enclosure makes it suitable for outdoor use.

Frost workers
Frost Alert SystemThis versatile solution benefits not only farmers but also frost workers in various fields, including construction, highway maintenance, salt truck operation, and road gritting.

ThermoGuard for wet situations
Typical other situations include: cooling cells with higher humidity, circumstances where the ThermoGuard could get wet. The IP66-rated outdoor enclosure makes the CM4200X suitable for wet or damp areas.

Mobeye Frost alarm – two versions

The Mobeye CM4200X is a battery-operated temperature alarm with an integrated communication module and an outdoor IP66-rated enclosure.

For those who require temperature trend analysis in addition to alarms, the extended version, the Mobeye CML4275, is available. The CML4275 offers multiple features that are valuable year-round. In addition to setting a lower limit for night frost detection, an upper temperature limit can be defined. If this limit is exceeded, the grower receives a notification, helping them decide when to adjust foil coverings or initiate cooling measures.

Mobeye night frost detectors continuously monitor outdoor temperatures and trigger alarms when the preset limit is reached. While the Mobeye CM4200X provides alarms, possibly with repeats, the CML4275 goes a step further by displaying temperature trends through an online application once in alarm mode, with the graph updating regularly. Both detectors have long-lasting battery life, and their temperature sensors come factory calibrated.

It’s important to note that the CM4200X functions primarily as an alarm dialer without protocol or recording capabilities. It alerts you only when temperature values deviate from the preset parameters or if connected sensors detect issues. The device allows connection of a single temperature sensor, and the open collector output is not available. Otherwise, its behaviour is identical to that of the CML4275.

How it works

  • Choose the Mobeye SIM card in combination with the Mobeye Internet Portal (management tool) or purchase a local 2G SIM card (normal size).
  • Insert the supplied SIM card and batteries.
    • The battery life exceeds the yearly frost period, even at low temperatures.
    • You’ll receive a notification when it’s time to replace the batteries.
  • Set the lower temperature limit.
  • Add at least one telephone number as an alarm receiving number.
  • In the event of an alarm situation, you will receive a phone call and SMS text messages (with current temperature).

Mobeye Internet Portal

You can use your Mobeye Frost Alarm either as a standalone solution or in conjunction with the Mobeye Internet Portal for enhanced functionality and user-friendliness. With the Internet Portal, large companies can remotely monitor temperatures across multiple orchards. Access to the Internet Portal is exclusive to Mobeye devices using Mobeye SIM cards.

Typical applications for the Frost Alert system

The Mobeye Frost Alarm proves to be a dependable assistance for:

  • Farmers
  • Fruit growers
  • Gardeners
  • Orchardists
  • Vineyard managers
  • Tree cultivators
  • Garden enthusiasts
  • Salt and grit workers
  • Cooling cell operators in damp environments


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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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