If you are looking for a way to protect Fire Extinguishers, AED's and Evacuation Chairs from theft and unwanted use, this sturdy, self-contained alarm is the answer. This extinguisher stopper has proven highly effective in helping prevent theft, misuse or vandalism of fire extinguishers and other important devices. The Theft Stopper leaves the protected devices accessible for emergencies and does not interfere with use in any way. This extinguisher stopper is available in a wireless model to allow for remote monitoring with an STI receiver in order to protect vital life safety equipment from a distance. New product features! - Space for optional language label for multi-lingual warning.