---
product_id: 375786258
title: "KiddeSM120X Interconnect Accessories Smoke Relay Module"
brand: "kidde"
price: "$90"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/375786258-kiddesm120x-interconnect-accessories-smoke-relay-module
store_origin: NZ
region: New Zealand
---

# Power Switching Interconnectivity Safety Assurance KiddeSM120X Interconnect Accessories Smoke Relay Module

**Brand:** kidde
**Price:** $90
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay Alert, Stay Safe! 🔥

## Quick Answers

- **What is this?** KiddeSM120X Interconnect Accessories Smoke Relay Module by kidde
- **How much does it cost?** $90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/375786258-kiddesm120x-interconnect-accessories-smoke-relay-module)

## Best For

- kidde enthusiasts

## Why This Product

- Trusted kidde brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **📏 Compact Design:** Lightweight at just 45.4g, perfect for modern installations.
- • **🔗 Seamless Integration:** Designed exclusively for Kidde Fyrnetics devices, ensuring optimal performance.
- • **🔌 Instant Power Control:** Effortlessly switches connected devices on/off with smoke/heat signals.
- • **⚙️ Reliable Performance:** Corded electric power source guarantees consistent operation.
- • **🛡️ Enhanced Safety Protocols:** Connects auxiliary warning devices for comprehensive safety coverage.

## Overview

The Kidde SM120X Interconnect Accessories Smoke Relay Module is a cutting-edge device designed to enhance fire safety by seamlessly switching connected devices' power in response to smoke or heat signals. Weighing only 45.4g and featuring a modern black finish, this module is specifically engineered for use with Kidde Fyrnetics devices, ensuring reliable performance and easy integration into your safety systems.

## Description

KiddeSM120X Interconnect Accessories Smoke Relay Module

## Features

- Switches connected device power when a smoke/heat interconnect signal is received
- Internal power Supply for pull station comparability controls and connects auxiliary warning devices
- Used with multiple station alarms and detectors use with Kidde fyrnetics devices only
- Kidde SM120X - Interconnect Accessories Smoke Relay Module: 408-SM120X - Smoke Relay Module

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Lumtopia |
| Part number | SM120X |
| Item Weight | 45.4 g |
| Product Dimensions | 17.78 x 35.56 x 17.78 cm; 45.36 g |
| Item model number | SM120X |
| Color | black |
| Style | Modern |
| Finish | Wired |
| Material | Plastic |
| Power source type | Corded Electric |
| Item Package Quantity | 1 |
| Included components | Kidde - Interconnect Accessories Smoke Relay Module: 408-Sm120X - smoke relay module |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** Kidde
- **Style:** Modern
- **Power source:** Corded Electric
- **Colour:** black
- **Item weight:** 0.1 Pounds

## Images

![KiddeSM120X Interconnect Accessories Smoke Relay Module - Image 1](https://m.media-amazon.com/images/I/51uODL435jL.jpg)

## Questions & Answers

**Q: How do you wire it to connect your fire sprinklers to the smoke alarms?**
A: Hard wired into the 120 VAC to the smoke detector, Black - HOT, White - Neutral, Red - Interconnect.  Alarm output; Blue - Common, Yellow - N/C, Orange - N/O, Grey - 9VDC output.   http://www.kidde.com/Documents/1276en.pdf  The Kidde relay modules can be used to activate auxiliary warning devices such as external bells and sirens, hallway or stairway lighting. Each relays will only activate when it receives a signal from an interconnected alarm.

**Q: Will the relay still trigger in a power outage?**
A: No, unless you have backup power to the alarms and the relay.

**Q: Can I use this to trigger the alarms from either normally open or closed switch? Like a pull station?**
A: Yes, this device can be used in either direction, as detailed in the manual.  If you use an external relay (like a pull station) to short the grey wire (9v signal) with the red wire (interconnect bus), it will cause the rest of the stations to alarm.

**Q: Does it matter to use normally open or normally closed? i have a apc power battery backup that powers multiple servers. if smoke alarm then no or nc?**
A: It's my understanding that normally open and normally closed are both supported by apc power backup and Kidde SM120X. My advice is to use normally closed because this is a better fail-safe configuration. If you use normally closed and the connection is broken the apc will shut down. If you use normally open and the connection is broken the apc will remain running and you may never be aware that the connection was broken. I don't know which side should provides the voltage for a normally closed contact, but the SM120X has a DC output voltage for this purpose.

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-27*