Customer Reviews For The Honeywell Home Large Thermostat Guard - CG512A

Overall Rating

5
8 Reviews
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8 customers recommend this product

Product Reviews

June S
February 11, 2022
Verified Purchase
Keeping Heat Low

It helps keep the kids from turning up the heat Thanks

Marisol Narvaez
June 15, 2019
Verified Purchase
Customer Review

Fits perfectly, very durable exactly what I needed.

Robert Hartshorn
August 24, 2016
Verified Purchase
Does the job

Installed quickly with only a couple of tools. Office staff can't mess with the thermometers any more.

Paul R
February 3, 2015
Verified Purchase
for a cafeteria

this item worked and is exactly what we needed.

Brad Remington
October 24, 2013
Verified Purchase
Customer Review

Very easy to order and shipment arrived in a timely manner.

Elliott Maser
May 14, 2013
Verified Purchase
Customer Review

Easy installation and a plus that only the person with the key can now adjust the thermostat.

Bessy Rojas
February 22, 2013
Verified Purchase
thermostat guard box

am using the box to cover a wireless router. But I need a slightly bigger box . Just a coupe of inches more height. Can you help?

Teresa Barber
November 30, 2011
Works great

I have a home day care- thank you! This keeps those curious little fingers from even trying to play with the thermostat.

Product FAQs

Will this Honeywell Thermostat Lock Box fit my thermostat?

The Honeywell Large Thermostat Guard measures 9 ¾ inches wide by 7 ¼ inches high by 3 ¾ inches deep. To ensure compatibility, it's recommended to measure your thermostat's dimensions (width, height, and depth) before purchasing the guard. This thermostat guard is compatible with the following Honeywell Thermostats:

  • RTH8xxxx Family Thermostats
  • RTH7xxxx Family Thermostats
  • RTH6xxxx Family Thermostats
  • RTH5xxxx Family Thermostats
  • RTH4xxxx Family Thermostats
  • RTH3xxxx Family thermostats
  • CT5x Family thermostats
  • CT3x Family Thermostats

What are the maximum thermostat dimensions this guard can accommodate?

This large-sized guard is designed to fit thermostats that measure 8.25" W x 5.75" H x 2.75" D or smaller. Since it is the "Large" model, it is ideal for older mechanical thermostats or newer, wide-screen smart thermostats that don't fit in standard medium-sized boxes.

How does the "inner shelf" improve security?

The inner shelf is a structural barrier located behind the ventilation slots. It is specifically designed to prevent "fishing". This is when someone tries to use a paperclip, wire, or small tool to reach through the vents and press buttons or move levers without the key.

Will the plastic cover turn yellow over time?

No. The guard is constructed from high-grade plastic that is UV and chemical resistant. This ensures the cover remains clear and resists yellowing or clouding even when installed in areas with high sun exposure or near cleaning chemicals, keeping your thermostat display visible.

CG512A1009/C Video Guide

Watch this helpful video to learn more about the Honeywell Home CG512A Large Thermostat Guard with Inner Shelf to Prevent Tampering.

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