I use this to monitor the temperature and power status in our RV while parked and in our truck when we stop to eat. We travel with our dog and this has helped tremendously. We no longer worry what’s going on while we’re away. The unit works off of cellular networks so as long as you have cell service you can use the unit. The unit only updates the status every 8 hours but you can purchase an instant update to check the real-time temperature/humidity for 0.25 cents an update. You purchase 8 updates for $2. This does not affect the alerts. The unit will still alert us any time the temperature goes above what we set it for or if the power goes out. Definitely would recommend it.

I think this is a great product. So nice that it runs off cell service and the plans are affordable. So, the temperature/humidity sensor updates every 8 hours. And when the power does go out, you get a notification that the power is out and the temperature at the time, but if you want to continue updating the temperature setting while the power is out (when you need it the most), you have to pay $2 each time you update it, which I found kind of surprising. But it definitely works, and let's you know when the power comes back on. I wish it had a feature that let's you know the temperature hourly if the power goes out to see how quickly it's dropping etc. Just my only criticism. Otherwise, it's really nice piece of mind.

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.

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.

Liked having carrier option in terms of which to buy. We needed Verizon. Concept is great. I wanted power MO itoting and temp. Size is good, easy to keep on the TV. Having plan options (full or part year) is nice. We will go annually and use at home off season. Customer support is USA based and helpful. Set up was easy and logical. Being able to purchase instant updates is a new feature and affordable since you only pay for what you use, it's inexpensive mind when you just want to check. Glad we made this choice.

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.