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Indoor Air Monitor with CO, Gas, Temperature & Humidity Monitoring

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Monitor CO, combustible gas, temperature, and humidity from one simple indoor device.

MARCALA home air monitor device shown next to its product packaging box

See the 4-in-1 Home Air Monitor in Action

Watch a 60-second preview of how MARCALA helps monitor carbon monoxide, gas,
temperature, and humidity on a clear digital display.

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4-IN-1 MONITORING

CO, Gas, Humidity & Temperature

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AUDIBLE & VISUAL ALERTS

85dB Alarm with Visual Alerts

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BRIGHT LCD DISPLAY

Easy-to-Read Backlit Screen

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BACKUP BATTERY

Backup power during outages

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EASY TO USE

Simple Setup & Operation

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COMPACT DESIGN

Sleek & Space Saving

Digital Monitoring with a Bright, Easy-to-Read Display

Close up view of the MARCALA monitor interface displaying digital sensor readings

CARBON MONOXIDE

Helps monitor CO levels and alerts when elevated readings are detected.

HUMIDITY

Monitors humidity levels for better indoor comfort awareness.

COMBUSTIBLE GAS

Designed to monitor certain combustible gases, including natural gas and propane.

TEMPERATURE

Tracks indoor temperature to help you stay aware of comfort conditions.

Monitor Key Indoor Air Conditions

Set up your MARCALA air monitor in minutes and add another layer of awareness to your home.

Sensors monitor carbon monoxide and combustible gas levels and trigger alerts based on detected readings.

MONITORS CO & GAS LEVELS

Tracks temperature and humidity to support everyday comfort awareness.

TRACKS TEMPERATURE & HUMIDITY

Audible and visual alerts help notify you when elevated readings are detected.

AUDIBLE & VISUAL ALERTS

Use multiple units to add monitoring coverage in key areas of your home.

MULTI-ROOM MONITORING

MARCALA indoor air monitor device showing clear digital display
Home 3D layout illustration showing different rooms for indoor air monitoring

Detects Carbon Monoxide

Monitors Humidity & Temperature

Combustible Gas Monitoring

Audible & Visual Alerts

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100,000+

EMERGENCY ROOM VISITS EACH YEAR

According to public health data, thousands of people seek medical attention annually due to accidental carbon monoxide exposure.

PEAK RISK SEASON

FALL & WINTER MONTHS

Heating systems and enclosed indoor environments can increase the likelihood of CO buildup during colder seasons.

400+

LIVES LOST ANNUALLY

Carbon monoxide exposure continues to be a documented household safety concern in the U.S. each year.

SILENT EXPOSURE

NO SMELL . NO COLOR NO TASTE

Carbon monoxide cannot be detected by human senses, which is why monitoring devices are commonly used.

PROTECT YOUR HOME BEFORE SYMPTOMS APPEAR.

Marcala continuously monitors carbon monoxide and combustible
gas levels while also tracking humidity and temperature in real time.

CARBON
MONOXIDE

COMBUSTIBLE
GAS

HUMIDITY

TEMPERATURE

One Monitor, Several Everyday Spaces

From the kitchen to the garage, MARCALA helps you keep a clearer view of indoor air conditions in everyday spaces.

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HOME

Add everyday monitoring for key living areas.

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RV & CAMPER

Monitor indoor conditions while traveling or camping, where appropriate.

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GARAGE / WORKSHOP

Add monitoring to garages, workshops, and utility areas.

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BASEMENT / UTILITY ROOM

Monitor indoor conditions in lower-level and utility spaces.

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1-PACK

3-PACK

Three views of MARCALA home air monitor with digital displays

SHOP WITH CONFIDENCE

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FREE SHIPPING ON ALL ORDERS

30-DAY RETURNS ON UNUSED ITEMS

SECURE CHECKOUT

U.S.-BASED CUSTOMER SUPPORT

See How MARCALA Compares

Designed to Fit Easily Into Everyday Spaces

Plug it into a standard outlet. The compact form and neutral finish are designed to blend into everyday spaces while keeping the display and alerts easy to notice.

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MONITOR INDOOR AIR CONDITIONS WITH ONE SMART DEVICE.

Digital screen interface of the MARCALA indoor air monitor showing sensor readings

Frequently Asked Questions

Important Safety Notice: This device is intended to help monitor indoor air conditions and provide audible and visual alerts based on sensor readings. This product does not prevent carbon monoxide or gas buildup and is not a substitute for proper installation, inspection, ventilation, or maintenance of fuel-burning appliances. If the alarm sounds or you suspect carbon monoxide or gas exposure, leave the area immediately and contact emergency services.

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