Let me start by saying this thermostat lock box is a game-changer for anyone dealing with curious kids or unauthorized adjustments. I installed it in my home, and the peace of mind is priceless.

The installation was super easy - just peel and stick the adhesive backing, and you're done. No need to remove your thermostat from the wall or deal with complicated tools. It took me less than 5 minutes to set up.

The clear acrylic material is sturdy and doesn't obstruct the view of my Nest thermostat at all. After three months of use, there's no yellowing or cloudiness - it still looks brand new.

I particularly appreciate how effective it's been at stopping my kids from playing with the temperature settings. The locked cover acts as a perfect visual deterrent - they see it and immediately lose interest.

However, I did notice one minor drawback: the keys aren't universal between units. If you're installing multiple boxes (like in an office or church), each will have its own unique key, which can be slightly inconvenient.

The size compatibility is crucial here - measure your thermostat carefully before purchasing. While it fits most standard smart thermostats perfectly, some users reported sizing issues when their thermostats were smaller than specified.

For energy-conscious families or businesses, this lock box delivers excellent value. It's helped maintain consistent temperatures in our home, leading to noticeable savings on our utility bills.