Replacement for Resideo TG512A1009 Versaguard Large Universal Thermostat Guard – Clear Acrylic Cover with Lock & 2 Keys, Tamper-Resistant, Fits Most Wall Thermostats, 7-1/4" x 9-3/4"

Protect your thermostat settings from unauthorized changes with the Resideo (Honeywell Home) TG512A1009 Versaguard Universal Thermostat Guard. Designed for both residential and commercial HVAC applications, this large clear acrylic guard physically prevents tampering, accidental damage, and unauthorized temperature adjustments — making it ideal for homes with children, rental properties, offices, schools, hotels, and multi-tenant buildings. The patented double-wall construction delivers superior tamper resistance compared to standard single-wall guards. The crystal-clear acrylic cover lets anyone read the thermostat display without unlocking or removing the guard, while the included tumbler lock ensures only authorized users can make adjustments. The key is engineered to be removable only when in the locked position, eliminating the risk of lockouts. Installation is straightforward — the guard mounts vertically or horizontally directly on the wall or over an exposed junction box without requiring removal of the existing thermostat. Integrated vents in the base maintain proper airflow to the thermostat sensor, ensuring accurate temperature readings and peak system efficiency. Compatible with Honeywell Home TH5000, TH6000, TH8000 series, T8082, T8085, T8600, and most standard electronic thermostats. Includes guard cover, ring base, opaque wall plate, lock, and 2 keys.

• 🔒 Tamper-Resistant Double-Wall Construction Patented dual-wall acrylic design provides an extra layer of security against tampering and physical damage — stronger than standard single-wall covers. The lock is engineered so the key can only be removed in the locked position, preventing accidental lockouts.
• Unit per sale:1
• 🔍 Crystal-Clear Visibility with Full Access Control The large clear acrylic cover allows anyone to read the thermostat display at a glance without unlocking the guard, while only authorized users with the included keys can adjust settings. Includes 2 tumbler keys for convenient access management.
• 📐 Universal Fit & Flexible Mounting Fits most standard wall thermostats including Honeywell Home TH5000, TH6000, TH8000 series and similar-sized units. Mounts vertically or horizontally on the wall or over an exposed junction box — no need to remove the existing thermostat during installation.
• 🌬️ Vented Base for Accurate Temperature Readings Built-in vents in the guard base maintain proper airflow to the thermostat sensor, preventing heat buildup inside the guard that could cause inaccurate readings or inefficient HVAC operation. Exterior dimensions: 7-1/4"H x 9-3/4"W x 3-3/8"D