FireTech™ CANNED SMOKE is ideal for checking the functionality of smoke alarms in the widest possible range. It offers efficient testing in a simple-to-use format—handheld or with use of a dispenser—and provides more tests per can with fast detector activation. Silicone-free with no CFCs and uses low GWP propellant. UL/ULC listed. 2.6 oz aerosol.