Potter SB-81R Conventional Smoke Detector Base with Relay – 24V Polarized Fire Alarm Base

About this product

The Potter SB-81R Conventional Smoke Detector Base is a high-performance, relay-integrated mounting base designed for use with Potter’s conventional smoke detector heads. Built for professional fire alarm installations, the SB-81R provides reliable activation and relay switching for external devices when smoke is detected. Featuring a 24V polarized design, built-in relay output, and support for remote annunciators, this base is ideal for commercial, industrial, and residential fire safety applications. Its standard 6-inch footprint and compatibility with 3-1/4″ or 4″ electrical back boxes ensure fast and secure installation.

Key features

• Secure Detector Locking Mechanism – Twist-to-lock design with optional vandal-resistant screw
• Relay-Integrated Base – Activates external circuits or devices when the detector goes into alarm
• Built-In Current Limiting Resistor & Blocking Diode – Ensures stable annunciator performance
• Compatible with Potter Conventional Detectors – Works with IS-24, PS-24, and PS-24H heads
• 24V DC Polarized Operation – Stable and reliable power design for fire alarm circuits
• Annunciator Output Support – Provides 15 mA output for remote LEDs or indicators
• Easy Installation – Fits standard 3-1/4″ or 4″ outlet boxes