The STI 6400 exit stopper is a self contained, compact alarm designed to provide a warning to others when an emergency fire exit door has been opened. The alarm acts as a deterrent against unauthorised use of emergency fire exit doors, and the 97 dB sounder can only be silenced by a key holder, when the alarm is reset. These units can be installed in minutes and are ideal for retrofit applications. 

• Exit Stopper door alarm - designed for single doors

• Bright red with 'STOP' emblazoned across the front

• Can act as a deterrent to vandalism and unauthorised use of the door

• Battery operated (9V battery included)

• Key operated manual override - allows the alarm to be silenced by an authorised person

• Lifetime guarantee against breakage during normal use

• Slimline design - 48mm profile

• Manufactured in UK

• User programmable alarm duration and delays (using dip switches)

• Also available for double door application