TRJ 3-Piece Thermostat Lock Box with Key – Clear Lockable Cover for Wall Thermostats (Fits 5" H × 6.3" W or Smaller)

Overview

Meet the TRJ 3-Piece Thermostat Lock Box with Key, a clear, lockable cover designed to secure wall-mounted thermostats without obscuring readings. This set includes three lock boxes and a key for easy, controlled access, making it suitable for homes, apartments, offices, and rental properties.

Crafted from clear PC plastic that resists yellowing and stands up to everyday use, the lock boxes stay durable and visually unobtrusive in any space. The transparent design allows quick temperature checks while keeping the device protected from tampering.

Core benefits at a glance

• Tamper-resistant design deters unauthorized changes and keeps thermostat settings stable in busy environments.
• Clear, durable PC material offers lasting clarity and resistance to chemicals and sun exposure.
• Designed to fit most thermostats and HVAC configurations, with a practical footprint of 7"W x 4.7"H x 2.1"D.
• Precision grooves on all four sides help preserve accurate readings by avoiding interference with the device.
• Easy installation with included mounting hardware; in many setups no thermostat removal is required.

Details that support daily use

• Preserve temperature readings with grooves that minimize contact and obstruction.
• Clear cover enables quick monitoring of the current temperature without removal.
• Durable PC construction offers UV resistance and anti-yellowing properties for long-term appearance.

Practical use cases

Ideal for homes, apartments, offices, schools, restaurants, hotels, and rental properties where secure access is desired without sacrificing visibility.

What’s included

• 3 TRJ thermostat lock boxes with keys
• Mounting hardware for quick, straightforward installation

Installation tips

Mount the box according to the thermostat’s door accessibility; you may need to install off-center to reach the battery door on select models.