Catalog > Smoke Detector Base, 6", 4 Wire W/Relay,...

Verified: January 13, 2026

Smoke Detector Base, 6", 4 Wire W/Relay, 24 Volt. System Sensor Model #B112LP

~$39.99

The System Sensor B112LP is a 6-inch smoke detector base with a built-in relay, designed to work with 4-wire smoke detectors in a 24-volt system.

Key Specifications

  • Compatibility: Works with 4-wire smoke detectors
  • Voltage: 24 VDC
  • Type: Smoke Detector Base with Relay
  • Mounting: Standard 6-inch base
  • Relay Type: Normally Open (NO)
  • Wire Terminals: Screw terminals for easy wiring
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