The Siemens DB-HR is a detector base providing the mechanical mount and electrical interface between a compatible spot-type detector head and the initiating circuit, with an integrated relay function for local control actions.

Compatibility

• Accepts compatible Siemens spot-type detector heads
• Listed as part of the head-and-base assembly under UL 268 / UL 521
• Used within UL 864 listed Siemens fire alarm systems
• Installed per manufacturer instructions

Key features

• Mounting and wiring interface for a spot-type detector head
• Integrated relay for local control or auxiliary signaling
• Twist-lock head retention for serviceable replacement
• Terminal connections for initiating and relay circuits
• Compatible with Cerberus PRO / FireFinder XLS / MXL legacy heads
• Standard outlet-box mounting pattern

Detector bases provide the mechanical mount and electrical interface between a spot-type sensor head and the initiating circuit, and may add relay, sounder, or supervision functions depending on the variant. The base is rated as part of the head-and-base assembly.

Verify panel/device family compatibility before ordering.