For most people, having a good thermostat and a multi-zoned HVAC system is good enough for controlling and monitoring the temperature in the home. However, sometimes you have specialized needs -- certain rooms or items that need to be kept within a particular temperature range. Temperatures outside those ranges can result in health problems and technological losses, so it's crucial to have a separate temperature monitoring system for each.

Your Home Server

If you run your own server for your website and home network, you need to keep the equipment cool. While a home server is nowhere near as huge as a server bank in a business, its data and temperature requirements are just as important. Consider getting two separate temperature gauges: one can monitor the temperature of the room as a whole, and one can monitor the server itself. Remember that even if you have good air conditioning cooling all the rooms in the house, each separate room can vary due to sun exposure and other factors.

With servers, the equipment itself can generate heat, creating a bit of a feedback loop. By monitoring the room itself, you can tell whether you need to take additional protective measures. By monitoring the server in addition to the room, you can see if there are times when the server seems to overheat, which may indicate issues with cooling fans in the equipment.

Your Freezer and Refrigerator

Keeping your food storage at or below the right temperature is vital for safety. Your freezer and fridge can stop working or end up warming up enough to cause a problem -- without you knowing at all. Freezer and refrigerator alarms alert you if the temperature inside either one rises into unsafe territory. Use these not only on any spare freezers you have in the garage, but on your main appliance, too.

Your Pet Reptile's Enclosure

If you have a pet reptile, you know it needs certain temperatures in which to survive and be comfortable. If the thermostat on the enclosure breaks, and the enclosure becomes too hot or too cold, it could hurt the reptile.

Look for monitoring systems that have an alarm, be it a basic audible alarm or one that sends an alert to your phone. If you have more than one, you may want to test them against each other to ensure accuracy and to see which ones might work better in particular circumstances. For example, a loud alarm would be better for that extra freezer in the garage, while a quieter alarm would be better for a reptile enclosure.