Resideo TG510A1001 Thermostat Guard

The Resideo TG510A1001 is a professional-grade Versaguard Universal Thermostat Guard designed to prevent unauthorized setpoint adjustments and physical tampering in commercial or residential environments. Built with a clear acrylic cover and a durable opaque polystyrene wallplate, this "small" series guard provides a secure enclosure without obstructing the visual display of the controller. For technicians performing retrofits, the TG510A1001 is the direct replacement for BB2001, offering a seamless upgrade path for legacy installations. Its unique double-wall construction enhances structural integrity against impact, while integrated guard base vents ensure consistent airflow, maintaining the accuracy of the internal thermistor. The unit supports both vertical and horizontal mounting on standard walls or exposed junction boxes, making it a versatile tool for HVAC energy savings in high-traffic zones. Each kit includes a tamper-resistant lock with two keys, engineered with a safety feature where the key is only removable in the locked position to ensure total job site security.

• Universal Compatibility: Specifically sized for the Honeywell T87 Round and other compact thermostats, with inside dimensions of 4 7/16" H x 4 7/16" W.
• Optimized Airflow: Precision-engineered ventilation slots prevent heat buildup inside the cover, ensuring the thermostat reads true ambient temperature.
• Technical Durability: The clear plastic thermostat cover is UV-stabilized to prevent yellowing and is "hammer-tough" for demanding mechanical rooms.
• Flexible Installation: Mounts directly over existing controls using the included opaque polystyrene wallplate, compatible with various wiring configurations.

What are the exact dimensions for fitting?
The TG510A1001 dimensions are 5 7/8" H x 5 7/8" W x 2 1/2" D (outside). Always verify your thermostat footprint stays within the 4 7/16" internal clearance to ensure a proper fit.

Can this be mounted horizontally?
Yes. This locking thermostat cover is designed for multi-directional mounting, accommodating both vertical and horizontal thermostat orientations or various junction box positions.

How do I get a replacement key?
This model uses a standard Honeywell thermostat guard key (part number 191990A). The tumbler lock is designed so the key cannot be accidentally left in the cylinder when unlocked.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.