Refrigerator and freezer temperature monitoring

Protect food before it is lost.

A refrigerator or freezer can lose power or stop cooling without anyone noticing. This sensor watches temperature 24/7, with probes inside the refrigerator, freezer, or both, and texts or emails designated people when temperature leaves the set range.

Buy Building Sensor $249.88
The computer is $249.88 with 1 module included. Extra modules are $75 and only work with a Building Sensor.
Homes, garages, restaurants, schools, cafeterias, and commercial kitchens.
Building Sensor
Cloud
Out-of-range alerts

Email or text when refrigerator or freezer temperature moves outside the desired range.

T/H
Probes in the box

Configure for a refrigerator, freezer, or dual refrigerator/freezer, with probes inside each compartment.

Door
Power and offline

If the sensor loses power or goes offline, a notification is generated so a failed sensor does not go unnoticed.

Building Sensor

Refrigerator and freezer protection for homes and kitchens

By the time a failed fridge or freezer is discovered, hundreds or thousands of dollars in food may already be at risk. This sensor gives an early warning so action can be taken first.

  • Building Sensor $249.88 with 1 sensor included
  • Probes inside a refrigerator, freezer, or both
  • Text or email when temperature leaves the set range
  • Notification if the sensor loses power or goes offline
  • Kitchen and garage units at home, plus restaurants, schools, and food service
1
Install

Place probes inside the refrigerator, freezer, or both compartments you need to protect.

2
Monitor

Building Sensor reports to the cloud every 10 minutes and immediately when an alert condition triggers.

3
Alert

Get SMS and email when temperature leaves the range, or when the sensor loses power or goes offline.

Sensor trend graph

Built for real refrigerators and freezers

  • Cloud connected, self reporting every 10 minutes
  • MAC based identity for inventory and maintenance
  • Local web interface for settings on your network
  • Configuration survives power loss (EEPROM)
  • Silent, maintenance friendly design

Technical Specifications

ModelsBuilding Sensor
SensingTemperature and Humidity (SHT3x-class)
Door InputMagnetic contact sensor (included)
ReportingEvery 10 minutes plus immediate on alerts
PowerIncluded power adapter
NetworkingConnects to the Caltuck cloud
EnclosureIndoor, vented; silent, fanless
Managementcaltuck.cloud and local web interface

FAQ

The Building Sensor computer is $249.88 and includes 1 module. Extra modules are $75 and only work if you already have the computer.

Temperature drift, rapid change events, and lid or door openings when you add the included magnetic contact. The history helps you see patterns and confirm what happened.

Yes. caltuck.cloud is built for multiple devices so you can watch a garage freezer, cabin freezer, and shop freezer in one place.
Ask a Question Review Specs

Want refrigerator or freezer monitoring advice?

Send a quick note and we will help you choose the right model and alert settings.

Example: kitchen fridge plus garage freezer, restaurant walk-in, school cafeteria.

We will never share your info.

Contact Us

Address:
8105 W I-25 Frontage Rd Unit 9, Frederick, CO 80516

Phone: (720)-499-0399

Email: info@caltuck.com

Business Hours

  • Monday to Thursday: 7:00am - 5:00pm
  • Friday: 7:00am - 3:00pm
  • Saturday and Sunday: Closed

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