We opened box to verify parts but never used the card. The Bosch D8129 Octo Relay Module Expander is a reliable and high-quality component specifically designed for security fire alarm systems. This module, made by the well-known brand Bosch, allows for easy expansion of relay modules in a fire alarm setup. The model D8129 is known for its durability and compatibility with various fire alarm systems, making it a valuable addition to any security system to enhance its functionality and protection capabilities.
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