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STI Universal Stopper® Series – Protective Covers for Pull Stations
The STI Universal Stopper® Series is a versatile protective cover designed to guard fire alarm pull stations, emergency buttons, and similar devices against accidental activation, vandalism, dust, and weather. Made from tough, UV-stabilized polycarbonate, these covers help prevent false alarms without hindering legitimate use in an emergency. With multiple cover types, mounting options, and horn/relay configurations, the Universal Stopper fits virtually any application—indoor or outdoor.
Key Features
- Durable polycarbonate construction resists impact and harsh conditions
- Protects against false alarms and accidental activations
- Multiple mounting options: flush, surface, or back box configurations
- Optional integral horn (95 or 105 dB) and relay for additional alerting
- IP56/NEMA 3RX rated with sealed mounting plates for outdoor use
- Available in dome or low-profile covers
- Custom label options in multiple languages and colors
- UL/cUL Listed (S2466) and ADA Compliant
- Three-year warranty on polycarbonate cover
Manufacturer Resources
Product Specs