Kidde KI-RB4 KI Series 4" Detector Mounting Base with Relay and Trim Skirt

Deliver dependable relay control where it matters most — in commercial fire and security installations. The Kidde Commercial KI-RB4 4" detector mounting base with relay provides a supervised, installer-selectable dry contact that streamlines integration with control panels, access control, and remote annunciation systems. Featuring selectable Normally Open or Normally Closed operation and a 1 amp dry contact rated at 30 VDC, this KI series detector base supports common low-voltage control tasks without extra components. Designed for standard 4" detector footprints and 24/30 VDC power, the KI-RB4 helps reduce installation time and wiring complexity while improving monitoring and response capabilities. The relay position is supervised to prevent accidental dislodging, lowering nuisance trips and maintenance calls. Note: this relay base does not support the GSA-LED remote LED accessory. Ideal for security, surveillance and building monitoring applications, the KI-RB4 is a practical choice for integrators specifying reliable control interfaces. Add the Kidde KI-RB4 to your next commercial system design for simplified relay control and secure installations.

• Improve control and monitoring: supervised relay provides reliable dry-contact switching for alarms, door control or auxiliary devices
• Flexible integration: installer-selectable Normally Open/Normally Closed relay simplifies wiring to existing fire or security panels
• Compact, compatible design: 4" detector mounting base fits KI series detectors and supports standard 24/30 VDC systems
• Safe, robust operation: relay position supervision prevents accidental disengagement and reduces false alarms
• Simplifies installations: 1 A pilot-duty contact rated at 30 VDC for common low-voltage control tasks without extra modules