STI 1130-ES Stopper II Surface Mount, 50mm Spacer with integral sounder

Prevent costly false fire alarms and deter tampering with the Safety Technology International STI 1130-ES Stopper II surface-mount protective cover. Engineered to protect manual pull stations without impeding legitimate alarm use, this clear polycarbonate shield delivers visible, tamperproof protection while maintaining fast access for authorized users. The STI-1130 includes an integral piezo sounder (95 or 105 dB at one foot) and a 50mm spacer, making it ideal for surface-mounted installations and recessed box adaptations. Lightweight yet rugged polycarbonate construction resists impact, vandalism and harsh environments, reducing maintenance calls and service disruptions. Because it accommodates most manual pull stations, the Stopper II is a versatile asset for security, surveillance and fire monitoring programs across schools, hospitals, nursing homes, retail and public facilities. Rely on Safety Technology’s proven Stopper II design to cut false alarm costs, improve situational awareness and streamline site-wide alarm protection. Specify STI 1130-ES for your next project or contact us to discuss applications and installation guidance.

• Stops prank and accidental activations while preserving legitimate alarms for uninterrupted safety
• Visible, tamperproof polycarbonate shield with 50mm spacer for secure, compliant surface-mount protection
• Integral piezo sounder (95/105 dB) that deters false activations and draws immediate attention for quick response
• Fits most manual pull stations to simplify installation across schools, hospitals, hotels and other public buildings
• Low-maintenance design with durable construction that supports long-term security and monitoring programs