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The Cellular Temperature & Humidity Monitor

Be alerted to changes in temperature, moisture, water leaks, and unexpected power outages.

  • 24/7 Uninterrupted Monitoring
  • Instant Alerts, Custom Notifications
  • Internet-Based, Access Anywhere
  • Flexible Subscription Options
  • Flag: United States on Google Android 12L Proudly Made in America
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MarCELL: The Cellular Advantage

Unlike Wi-Fi devices and unpredictable internet service, MarCELL reports data and sends alerts over the nation’s most reliable cellular networks, even when power and internet go down.

MarCELL will continue to operate during power outages for up to 48 hours on our integrated backup battery.

Use MarCELL anywhere there is a cellular signal. MarCELL performs perfectly even in remote locations where Wi-Fi isn’t available or reliable.

Custom Notifications

Choose multiple people to receive alerts by text, call or email.

Intuitive Dashboard

Set trigger points, view data, and customize your preferences.

Backup Battery

Monitors during power outages for up to 48 hours.

Access Data On-the-Go

Keep tabs on your property at anytime, from anywhere.
Download our mobile app from the App Store or Google Play Store.

Easy Access Dashboard:

Our intuitive online dashboard offers key historic data trends, valuable insights, and controlled oversight of environmental conditions.

How It Works

Choose Your MarCELL:

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    MarCELL 4G Multisensor

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Yes. MarCELL is a cellular connected device using Verizon and AT&T networks. Monthly plans start as low as $8.25/month. Views plans here.

Devices connected to the Verizon network can operate in the U.S and Puerto Rico only. We also offer an AT&T version of MarCELL which operates in the U.S, Canada, and Mexico.

No, MarCELL uses its own independent 4G data connection. It does not require Wi-Fi, fixed broadband, or an existing phone line.

MarCELL logs a reading every hour and uploads it to the dashboard every 8 hours. To view your readings in real-time, you can purchase our Instant Update bundles, which cost $2 for 8 Instant Updates. NOTE: As part of your cellular plan with MarCELL, you will receive immediate real-time alerts at no additional cost.

We’re confident MarCELL will the perfect solution for your needs! In the case that you are unhappy with the device, you can return it for a full refund within the first 90 days, no questions asked.

What Our Customers Say

With hundreds of properties to monitor, our favorite feature with MarCELL is that it will alert us if any of our homes’ temperatures and humidity reach a low threshold.

Interlake Homeowners Association, Property Manager

The MarCELL has given me 100% peace of mind when it comes to leaving my pups in the RV on a hot day. I don’t have to think about it – it simply alerts me if the temperature has gone over my set limit.

Camp Addict, RV Traveler

MarCELL has already saved us at our cabin in rural Northern Wisconsin. We are unable to get wireless or landline communications, so MarCELL was a perfect option.

Rob L., Homeowner