Building Sensor showing live temperature and humidity
Building Sensor

Your buildings can’t tell you when there’s a problem.

Caltuck monitors and notifies you so you can take action before small issues become costly damage.

How it works
One module per Building Sensor. The first is included. Extra modules are $75.
  • ✓ 24/7 cloud-connected monitoring
  • ✓ Email and text alerts
  • ✓ Easy installation (Wi-Fi or PoE)
  • ✓ No IT required
Apartment buildings, office buildings, retail centers, and warehouses.

Monitor and get notified about the spaces your people can’t.

Open window in winter with snow outside

Window left open

Temperature drops and pipes can freeze.

Sprinkler room pipes that can freeze

Sprinkler room

Can get too cold without anyone knowing.

Water leak on a floor

Water leak

Detect water where it shouldn’t be.

Building pump and mechanical equipment

Pump status

Know if critical pumps are running.

Temperature
Water
Doors & Windows
Pumps
Voltage & Battery
Connectivity
Building Sensor watching a room
1

Watch the room

Apartments, offices, retail, warehouses, vacant homes, mechanical rooms, fire risers, and storage.

Phone showing Building Sensor readings and alerts
2

Get the alert

High and low temperature texts include the actual reading. Door and window status shows if something changed.

Caltuck cloud app showing a live online Building Sensor
3

Know it is online

If it loses power or stops checking in, designated people get a text or email.

How it works

Building Sensor showing live temperature

Basic Temp Sensor

The wall unit as it ships. Temperature, humidity, and door status, with texts when a room goes off.

  • High and low temperature alerts with the actual reading
  • Door and window open or closed
  • Text if it loses power or stops checking in
Building Sensor protecting a refrigerator and freezer

Temp/Humidity + Fridge

Keeps room temperature and humidity, plus probes inside a refrigerator, freezer, or both.

  • Kitchen, garage, restaurant, and school coolers
  • Alert when temperature leaves the set range
  • Notification if power is lost
Building Sensor with HVAC supply and return probes

Temp/Humidity + HVAC

Keeps room temperature and humidity, plus supply and return probes so you see if the system is actually heating or cooling.

  • Supply, return, and Delta T
  • Catch a failed changeover or a unit that is not keeping up
  • Mechanical rooms and rooftop equipment
WaterBug leak module with two detectors

Temp/Humidity + WaterBug

Keeps room temperature and humidity, plus two leak detectors for floors, pits, and pump rooms.

  • Water on the floor
  • Pump run and float-switch events
  • Basements, elevator pits, and mechanical rooms
Building Sensor set up for voltage only

Voltage only

This mode is voltage and battery remaining. It does not run as a temp/humidity sensor.

  • Live voltage on the screen and in the cloud
  • Battery remaining for backup power
  • Alert when voltage drops

What you get

Put it in the room you cannot watch all day. It logs temperature, watches the door, and texts you when something is off.

  • Temperature history and high/low alerts with the actual reading
  • Door and window status
  • Text or email if it goes offline
  • Live screen plus caltuck.cloud

Install

Mount it where problems start: basements, garages, mechanical rooms, vacant suites, or access doors.

Monitor

It reports to the cloud every few minutes and immediately when an alert event happens.

Alert

You get SMS or email before a small issue becomes frozen pipes, spoiled product, or an expensive response.

Caltuck Cloud dashboard showing live Building Sensor readings

Built for homes and property operations

  • One dashboard for a house, shop, or more than one building
  • Location-based alerts so you know which room needs attention
  • Trend history for temperature complaints and freeze-risk checks
  • Event records for doors, windows, and sensor-offline alerts

Technical specifications

ProductBuilding Sensor
Price$249.88
ModulesOptional. Voltage, Fridge, HVAC, or WaterBug. One per Building Sensor. First included, extras $75
SensingTemperature and humidity (SHT3x-class)
Door inputMagnetic contact sensor
Building useApartment buildings, offices, retail, warehouses, mechanical rooms, sprinkler rooms, vacant properties, and remote rooms
ReportingPeriodic health reports plus immediate alerts
PowerIncluded power adapter. Wi-Fi or PoE
NetworkingConnects to the Caltuck cloud
EnclosureIndoor, vented, silent, fanless
Managementcaltuck.cloud and local web interface

FAQ

Basements, garages, cabins, mechanical rooms, sprinkler rooms, vacant homes, storage, server closets, and other rooms you are not standing in.

It helps catch freeze risk, overheating, humidity changes, water events, unexpected door opens, and motion activity. Routine health reports run on an interval, and alert events are sent right away.

Yes. Use caltuck.cloud to view sensors across buildings, label them by location, track alert history, and keep inventory organized by device identity.
Ask a question Review specs

Ask about a Building Sensor

Tell us the rooms and how many you need.

Example: basement, garage, cabin, or mechanical room.

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

Connect to Our Cloud

Our automated monitoring and cloud services provide peace of mind and a single pane of glass for your properties and systems.

Open The Dashboard

Meet Us

Cloud Status

System Monitoring Online

Thermostatic Systems Online

Tower Health Monitors Online

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Get Support

Our 24 hour ticketing system lets you request help on your schedule. Our support staff takes pride in resolving issues quickly.

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Veteran owned

We are a veteran owned company built on discipline, integrity, and commitment. We are proud to work with other veterans who bring teamwork and a mission focused mindset to every project.


Our Promise

At Caltuck, we go above and beyond to ensure our customers receive unmatched integrity and top-tier quality. We prioritize the best policies, products, and processes to care for our clients at a level that sets us apart from the competition.