Kidde Edwards KC2-RB4 2-wire Relay Base Ul Ulc

Product Description

The KIDDE EDWARDS KC2-RB4 is a 2-wire relay base designed for use with compatible detector heads in fire alarm systems. The relay base provides a switched output that activates when the paired detector enters alarm, allowing the system to trigger auxiliary devices such as fans, dampers, or notification appliances. It is sold as a single unit and carries both UL and ULC listings, confirming it meets North American standards for fire alarm equipment. Licensed fire alarm technicians and low-voltage electricians are the primary installers of this component.

The KC2-RB4 relay base is suited for commercial and residential fire alarm installations where a localized switched output is needed at the detector location. It is categorized as a fire alarm accessory and is intended for 2-wire system configurations. Typical applications include HVAC shutdown, door holder release, and auxiliary notification control tied directly to a single detector zone.

Key Features

• 2-wire relay base configuration for compatible detector heads
• Switched relay output enables control of auxiliary devices at the detector level
• UL and ULC listed for compliance with North American fire alarm standards
• Single-unit packaging suitable for individual zone or device installations
• Fire alarm accessory category for use in structured detection systems

Compatibility

Designed as an OEM-style replacement or expansion component for 2-wire fire alarm detector base applications. Consult the product data sheet and system documentation to confirm detector head compatibility before installation.

Installation Notes

Installation should be performed by a licensed fire alarm technician or low-voltage electrician in accordance with NFPA 72 and local authority having jurisdiction requirements. De-energize and isolate the fire alarm control panel circuit before removing or installing any detector base. Verify that the connected detector head model is rated for use with a relay base before completing the circuit. Do not restore system power until all wiring connections have been inspected and the detector head is fully seated in the base.