The Siemens MSI-10B Manual Fire Alarm Box (P/N: 500-893080) is a highly reliable pull station designed to provide immediate manual activation of fire alarm systems. It plays a crucial role in emergency response by allowing individuals to quickly alert building occupants and emergency personnel during fire events.

Constructed with a durable metal housing, the MSI-10B ensures long-lasting performance even in demanding environments. Its robust design resists tampering and mechanical wear, making it ideal for use in schools, hospitals, offices, and industrial facilities. Additionally, the unit supports single-action operation, enabling users to activate the alarm with a single downward pull.

The device comes with a reset key, allowing authorized personnel to restore it to a ready state after activation. This feature not only simplifies maintenance but also ensures the station remains functional after each use. The box also includes a visible red finish and raised white lettering, making it easy to locate in an emergency.

Installation is straightforward. The MSI-10B mounts on a standard single-gang electrical box and connects easily to compatible Siemens fire alarm control panels. Since it is addressable, the system can precisely identify the activation point, which helps responders locate the source of the alarm faster.

The MSI-10B meets UL and ADA requirements, ensuring it aligns with industry regulations. Its clear labeling and easy-to-use interface make it accessible for a wide range of users, including individuals with limited mobility.