STI will be closed on Friday, July 4th. Normal business hours will resume on Monday, July 7th.
STI will be closed on Friday, July 4th. Normal business hours will resume on Monday, July 7th.
The Thermostat Protector with key lock helps protect thermostat and energy sensors. The polycarbonate cover mounts directly over the unit to prevent unwanted access yet allows authorized use with the provided key. Designed with holes in the frame to allow air to circulate freely (for proper operation of protected thermostats) yet an inner wall prevents tampering with dials and levers. It is quick and easy to install.
More videos
STI manufacturers covers, cages, alarms and custom buttons. Rely on STI® to protect the things that protect you.
How to easily install the Stopper II® with spacer. This unique Stopper II protective cover has helped prevent false fire alarms around the world for over 40 years, without restricting legitimate operation of devices.
Constructed of tough 9-gauge coated steel wire, this cage is an excellent way to protect smoke detectors against both vandalism and accidental damage.