Thermostat Guards, Fire Station Protectors, Safety Technology International (STI), and more!

STI-6610: Mini Stopper II® with Horn Flush Mount with Lock

$101.00 $80.80

Mini Stopper II® with Horn Flush Mount with Lock

This unique device has helped stop false fire alarms around the world for over 30 years, without restricting legitimate alarms. With a custom label the STI-6610 is also ideal for access controls, digital keypads, smaller manual pull stations, shutdown switches in computer rooms, workshops and much more. The strong, durable construction takes the toughest knocks while it guards against accidental or intentional physical damage.

STI-6610 consists of a clear, tamperproof, super tough polycarbonate cover and frame that is designed for flush mount manual pull stations. When lifted to gain access to the protected unit, a piercing 105 dB battery powered warning horn sounds. Immediate attention is drawn to the area and a prankster will either run or be caught.


  • Protects against vandalism and accidental damage.

  • Cover is UV-stabilized.

  • Fast and easy installation.

  • Comes complete with 105 dB horn.

  • Cover is molded from thick, super tough polycarbonate material.

  • Three year guarantee against breakage of polycarbonate in normal use (one year on electro mechanical and electronic components).

  • Perfect for protecting shutdown switches in computer rooms and workshops as well as other push button units.

  • Typical working properties of polycarbonate are -40° to 250°F (-40° to 121°C).

  • Custom labeling available (incurs a fee).

  • Note: End user must verify the alarm and battery function every six months and replace battery annually or as required.