The iO-TGL Thermostat Guard is meant to protect a wall-mounted thermostat from impact and tampering. It is made of a transparent material that maintains high visibility of the thermostat display while being tough and highly resilient. This thermostat guard features a key lock and is perfect for landlords, property managers, and anyone looking to maintain consistent climate control. Ensure your thermostat settings remain exactly where you want them with our reliable and stylish guard. This thermostat guard is American-Made Quality. It is manufactured with high-grade materials right here in the USA, iO HVAC Controls thermostat guard meets the highest standards of durability and reliability. Please Note: If you have lost your key for the iO-TGL-KEY, please contact iO HVAC Controls directly. Features: Easy-to-install Prevents tampering with your heating and cooling options Available with lock and key or combination lock Highly ventilated Heat-resistant Chemical-resistant Dishwasher safe