Pokin SM120X Interconnect Accessories for Smoke Relay Module – Kidde Fyrnetics Compatible

Overview

The Pokin SM120X Interconnect Accessories offer a compact, relay-based add-on designed to work with Kidde Fyrnetics devices and many standard smoke detectors. When a smoke or heat interconnect signal is detected, this module switches power to an attached device—such as an external bell, horn, or hallway light—without routing high-voltage through the detector itself. A built-in power supply supports pull stations and compatibility controls, and a dedicated test/reset button helps confirm proper operation.

What it does

This module activates only in response to a smoke/heat interconnect signal. The relay provides isolated, normally open and normally closed contacts, enabling you to trigger auxiliary warning devices while keeping the monitoring circuit separate from high-voltage lines. It is designed to integrate with Kidde Fyrnetics devices and compatible smoke alarms, providing a seamless extension to your existing safety system.

• Seamless compatibility with Kidde Fyrnetics alarms and many standard detectors
• Isolated contacts ensure safe, external device triggering without direct 120 V connections through the module
• Normally open and normally closed outputs to match different interconnect requirements

Key specifications and usage

• Model: SM120X / 408-SM120X
• Power source: 120 VAC, 60 Hz, 0.08 A
• Includes: 10 in. long, 18 GA pigtail leads
• Features: test/reset button; power supply for pull stations and auxiliary controls
• Operating conditions: 4.4°C to 37.8°C (40°F to 100°F), up to 90% relative humidity

Practical use cases

Ideal for interconnected installations where you want to activate external warnings or lighting when the system detects smoke or heat. The module can be placed in a convenient location near the main panel or at a central detector box, allowing flexible wiring choices while preserving system reliability.

Installation notes

Install with interlinked alarms, and verify the required termination resistors per your alarm manual. Choose the appropriate lead configuration for your system and avoid exceeding the interconnect device limits specified by the alarm manufacturer. This module is designed for use within the specified temperature and humidity range and should be installed by someone familiar with home safety wiring. For additional guidance, Pokin offers dedicated support via Amazon.