Description The Bosch D7053 is a multiplex input/output module designed to expand the functionality of compatible Bosch fire alarm control systems. It provides supervised input monitoring and a programmable Form C relay output for controlling auxiliary devices within fire detection and life safety installations. The module communicates over the Bosch multiplex bus, allowing efficient integration into addressable fire alarm networks. Technical Specifications Condition New/Never Used Surplus Brand Bosch Category Fire Alarm Systems Part Number D7053 Subcategory Multiplex Input/Output Modules Product Type Multiplex Input/Output Module Input Type Normally Open (NO) Supervised Contact Output Type Form C (SPDT) Relay Communication Bosch Multiplex (MUX) Bus Bus Configuration Class A (Style 6) or Class B (Style 4) Power Source Powered directly from compatible control panel Application Fire alarm monitoring and auxiliary equipment control Compatible Systems Bosch multiplex fire alarm control panels Installation Addressable field module Construction Industrial electronic module Weight Approx. 0.25 lb Information About D7053 The D7053 is part of the Bosch multiplex expansion family and is designed for use with compatible Bosch fire alarm control panels that support MUX devices. It monitors a normally open supervised contact while providing an independently programmable Form C relay output for activating external equipment such as door holders, HVAC shutdown systems, annunciators, or other auxiliary devices. The module operates directly from the control panel's multiplex bus without requiring a separate power supply for normal operation. Its compact construction and support for both Class A (Style 6) and Class B (Style 4) wiring configurations make it suitable for a wide range of commercial fire alarm installations. Key Features: Multiplex I/O Module: Expands Bosch fire alarm systems with both input monitoring and relay output control. Supervised Input: Monitors a normally open (NO) supervised contact device for reliable status detection. Form C Relay Output: Provides an independently controlled SPDT relay for auxiliary equipment activation. MUX Bus Communication: Connects directly to the Bosch multiplex communication bus. Class A and Class B Wiring: Supports both Style 6 and Style 4 multiplex bus configurations. Panel-Powered Operation: Receives operating power directly from the compatible fire alarm control panel. Addressable Integration: Functions as an individually addressable device within the fire alarm network. Auxiliary Device Control: Suitable for door release, HVAC shutdown, annunciation, and other control functions. Compact Industrial Design: Allows convenient installation inside fire alarm cabinets or junction boxes. Commercial Fire Protection: Designed for life safety and commercial fire alarm applications. The D7053 delivers the reliability and precision required for addressable fire alarm monitoring, auxiliary device control, and multiplex system expansion.
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