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Heat Guardian


Long range pet temperature monitor for cars and RVs

NEW: Welcome to our new customer Forum.  Feel free to ask questions there.

Keep your pet safe from overheating or freezing

The Heat Guardian is a precision remote thermometer. Never worry again about the temperature in your RV or car. Each Guardian tests the air temperature every 30 seconds. The mobile Guardian shows the temperature immediately so you can react if your RV loses power, your heating or AC fails or you lose shade.

Works everywhere

The Heat Guardian uses a special long range radio band. It does not require the internet, Wi-Fi, or cell-phone service. Leave your car or RV in the parking area, walk to your nearby destination, check the signal, then relax, confident that your pet is safe. Heat Guardian is the most accurate, most reliable, and longest range temperature monitor available today.

In the images below, we took a walk with the mobile Heat Guardian while the base was at the shown spot. A dot means a successful connection to the base from the mobile.


Woodland Walk


City Walk


Shopping/Residential Center Walk

The labels show received signal level at the marked spot. Signal level ranges from -30 (strong) to -128 (very weak). 

For comparison, maximum indoor Wi-Fi range is about 0.03 miles.

Peace of mind

The Heat Guardian tells you immediately if there is a problem. Every few seconds a blinking lights shows connection status. There is an audible alarm for disconnects and remote temperature limits. The display blanks during errors. If something goes wrong you will know it.

This example shows the Heat Guardian reacting to the remote unit being too hot.

Run for an entire weekend without charging

The battery in the Heat Guardian can last 3 days (at 10 hours a day of use). Charge it at home then use it all weekend. Feel safe and secure. It uses a standard USB charger and charges in about two hours - ready for another weekend.

No extra fees

Once you buy the Heat Guardian pair there are no additional charges - ever. We provide any software updates for free for the life of the units and the long range radio has no expense.

Works with your phone

The Heat Guardian supports Bluetooth 5.0. Use the *optional* Android application to set temperature limits, view the remote temperature, and get audible warnings when connections are lost or temperatures go out of range. iOS support is coming soon for your iPad and iPhone.

The same application is available for Windows 10 - PC laptop control and monitoring.

Batteries and Heat

Never store batteries at below 0F or above 120F. Do not charge the monitor when it is above 120F.

What is a Safe Temperature?

Different dogs respond differently based on humidity as well as age, size and breed.

Check Your Dog

Taking a dog's temperature will quickly tell you if there is a serious problem.

Check the Laws

Laws on leaving your pet in a vehicle vary from state to state. Check your state's laws.

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