Maintain control of your sites and alert workers during emergencies with a safety horn. Always keep backups on hand with this refill can that emits 120dB blast at 10 feet. Ideal for applications where respirators are worn or background noise obscures verbal warnings. Item desc./weight: 8 oz. chrome plated aerosol can. Operating temperature range: -20 to 120 degrees Fahrenheit. Activation: Trigger. Propellant: Tetrafluoroethene gas. Note that this listing is for replacement can only; safety air horn sold separately, not included. Meets all EPA ozone standards. Shop more jobsite safety essentials at 95TSS.