---
product_id: 1129971
title: "Safety Technology International, Inc. STI-9110 Thermostat Protector with Key Lock - Clear Polycarbonate Enclosure"
brand: "safety technology international, inc."
price: "¥19181"
currency: JPY
in_stock: true
reviews_count: 8
url: https://www.desertcart.jp/products/1129971-safety-technology-international-inc-sti-9110-thermostat-protector-with-key
store_origin: JP
region: Japan
---

# Key lock security Air circulation holes Quick installation Safety Technology International, Inc. STI-9110 Thermostat Protector with Key Lock - Clear Polycarbonate Enclosure

**Brand:** safety technology international, inc.
**Price:** ¥19181
**Availability:** ✅ In Stock

## Summary

> 🔐 Secure Your Comfort with Style!

## Quick Answers

- **What is this?** Safety Technology International, Inc. STI-9110 Thermostat Protector with Key Lock - Clear Polycarbonate Enclosure by safety technology international, inc.
- **How much does it cost?** ¥19181 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/1129971-safety-technology-international-inc-sti-9110-thermostat-protector-with-key)

## Best For

- safety technology international, inc. enthusiasts

## Why This Product

- Trusted safety technology international, inc. brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Breathe Easy:** Innovative holes ensure optimal air circulation for your thermostat.
- • **Lock It Down:** Equipped with a key lock assembly for added security.
- • **Hassle-Free Setup:** Enjoy a straightforward installation process that saves you time.
- • **Guaranteed Durability:** Backed by a three-year guarantee against breakage in normal use.
- • **Protect Your Investment:** Defend against vandalism and tampering with a robust design.

## Overview

The Safety Technology International, Inc. STI-9110 Thermostat Protector is a clear polycarbonate enclosure designed to prevent vandalism and damage to your thermostat. Featuring a key lock assembly for enhanced security, it allows for free air circulation and is easy to install. With a three-year guarantee against breakage, this protector combines functionality with peace of mind.

## Description

Safety Technology International, Inc. STI-9110 Thermostat Protector with Key Lock - Clear Polycarbonate Enclosure

## Features

- Helps stop vandalism, damage and tampering
- Holes in the frame allow air to circulate freely
- All thermostat covers have a key lock assembly
- Easy and quick installation
- Three year guarantee against breakage of polycarbonate in normal use

## Images

![Safety Technology International, Inc. STI-9110 Thermostat Protector with Key Lock - Clear Polycarbonate Enclosure - Image 1](https://m.media-amazon.com/images/I/61vnhmHElcL.jpg)
![Safety Technology International, Inc. STI-9110 Thermostat Protector with Key Lock - Clear Polycarbonate Enclosure - Image 2](https://m.media-amazon.com/images/I/51H1QLW4LgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    A bit bulky, but a fine product
  

*by S***K on Reviewed in the United States 🇺🇸 on November 26, 2015*

One previous reviewer indicated that this item was larger than it needed to be -- and therefore stuck out too far from the wall. Another wrote that it was not strong/robust enough to withstand and resist tampering.  I can understand the first "hit," but not the second.I agree that the rounded/semicircular "cross-section" wasn't necessary: it would have been possible to cast this in a much flatter configuration, so that it could fully cover the thermostat while shoulders would not bump the guard as people passed it.  I cannot see any way in which that would negatively affect its function, and I have seen guards from other manufacturers with such a low profile.However, once the lid is snapped into place and securely locked, it is hard to imagine how the unit might be circumvented or significantly damaged unless someone used a hammer, screw driver, or some other tool.  Polycarbonate is a tough material, even at this thickness.  Unless it were used in the gorilla house of the zoo, this would probably do its job well and last "forever."I would add two more positive comment regarding design features that elevated this item from a "4" evaluation to a "5:"1) The polycarbonate base that mounts against the wall has vents which allow air to pass but offer no "straight-line" access to the thermostat's controls.  Even if you bent a paper clip, it would be extremely difficult or impossible to thread it through the vents and to change the heating/cooling settings.2) Because the wiring for my thermostat was NOT inside the wall, and was connected to the control unit using a steel wire-molding, I had to use a coping saw and a file to cut a three-sided opening in the guard's polycarbonate mounting base.  This worked just fine -- the base is thick enough that the wire-molding was surrounded on three sides, and that the guard's cover still snapped in place just fine.

### ⭐⭐ 2.0 out of 5 stars







  
  
    Not enough breathing holes for thermometer
  

*by D***. on Reviewed in the United States 🇺🇸 on June 25, 2023*

Needs more holes for correct temp

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Does the job, maybe too well !
  

*by D***B on Reviewed in the United States 🇺🇸 on November 14, 2014*

This is a good product.  It is larger than is appears in the images which, in my case, was a problem as it sticks out into the airspace over some steps. However, it is very durable, so it has survived the variety of impacts that three of us, two humans and a standard poodle, have delivered to it.  I bought it to eliminate problems of people adjusting the settings by running into the thermostat, so it does the job.On the other hand, it doesn't appear to have a enough openings to allow air to circulate around the thermostat, so it lags behind the actual temperature changes in the room. That would be a problem in other circumstances, but our situation - making it through the winter - is not as demanding of subtle temperature changes normally detected by thermostats.

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**Shop now:** [https://www.desertcart.jp/products/1129971-safety-technology-international-inc-sti-9110-thermostat-protector-with-key](https://www.desertcart.jp/products/1129971-safety-technology-international-inc-sti-9110-thermostat-protector-with-key)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-04*