Cooper MSU840 Intelligent Addressable Shop Monitor Unit

The Cooper (Eaton) MSU840 is a comprehensive interface module specifically engineered for retail units within a larger complex, such as a shopping mall. It allows an individual shop to maintain its own conventional detection and local audible notification while fully reporting to a central addressable control panel. The unit monitors two input circuits (one for call points and one for detectors/call points) and provides two conventional sounder circuits, which require an external 24V DC power supply to drive the alarm load. Featuring an integral short-circuit isolator and automated soft-addressing, the MSU840 provides a seamless way to modernize fire safety in multi-tenant buildings while reusing existing conventional field wiring. Technical Specifications ? Brand: Cooper (Eaton) ? Model/Part No: MSU840 ? Operating Voltage: 15 V DC to 30 V DC ? Quiescent Current: 3.4 mA (Maximum) ? Alarm Current: 8 mA (Maximum) ? Zone Capacity: Up to 20 Conventional Detectors ? Sounder Outputs: 2 Conventional Sounder Circuits (300 mA per circuit) ? Addressing Mode: Soft Addressing ? IP Rating: IP40 ? Operating Temperature: -10?C to 60?C ? Dimensions: 147 mm x 88 mm x 60 mm (5.79 inch x 3.46 inch x 2.36 inch) Key Features ? Conventional-to-Addressable Integration: Specifically designed to bridge small conventional systems (like individual retail shops) into a large-scale intelligent addressable main system. ? Dual Monitoring Circuits: Features two separate monitoring inputs: one for a zone of up to 20 detectors and call points, and a dedicated second input for call points only. ? Integrated Sounder Control: Provides two monitored conventional sounder circuits, allowing for localized audible notification within the monitored area. ? Intelligent Soft Addressing: Automatically addressed by the control panel during commissioning, which simplifies installation and prevents manual addressing errors. ? Built-in Fault Isolation: Equipped with an integral short-circuit isolator to protect the main addressable loop from faults occurring within the localized shop unit.