--- product_id: 560835485 title: "Kidde SM120X Interconnect Accessories Smoke Relay Module" brand: "kidde" price: "79116β‚«" currency: VND in_stock: false url: https://www.desertcart.vn/products/560835485-kidde-sm120x-interconnect-accessories-smoke-relay-module store_origin: VN region: Vietnam --- # 120 VAC power switching Seamless interconnect compatibility Activates auxiliary alarms & lighting Kidde SM120X Interconnect Accessories Smoke Relay Module **Brand:** kidde **Price:** 79116β‚« **Availability:** ❌ Out of Stock ## Summary > 🚨 Stay ahead of dangerβ€”connect, alert, and protect with Kidde SM120X! ## Quick Answers - **What is this?** Kidde SM120X Interconnect Accessories Smoke Relay Module by kidde - **How much does it cost?** 79116β‚« with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/560835485-kidde-sm120x-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 - β€’ **Compact & Lightweight:** Slim 45g module fits discreetly into any safety setup without bulk. - β€’ **Internal Power Supply:** Built-in power source supports pull station compatibility without extra wiring hassle. - β€’ **Instant Power Activation:** Switches connected devices immediately upon smoke detection for rapid response. - β€’ **Plug & Play Interconnect:** Designed exclusively for Kidde Fyrnetics devices ensuring flawless system integration. - β€’ **Universal Auxiliary Control:** Effortlessly powers external bells, sirens, and emergency lighting to amplify alerts. ## Overview The Kidde SM120X Smoke Relay Module is a compact, 120 VAC-powered device that activates auxiliary warning systems like external sirens and emergency lighting upon receiving a smoke alarm signal. Designed exclusively for Kidde Fyrnetics interconnected smoke alarms, it features an internal power supply for pull station compatibility, ensuring seamless integration and rapid emergency response. ## Description Used to activate auxiliary warning devices, such as external bells and sirens and hallway or stairway lighting, and will only activate when it receives a smoke signal from an interconnected smoke alarm. 120 VAC. ## 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 | | Product Dimensions | 17.78 x 35.56 x 17.78 cm; 45.36 g | | Item model number | SM120X | | Colour | Black | | Style | Classic | | Material | Plastic | | Power Source | 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 | | Item Weight | 45.4 g | ## Product Details - **Brand:** Kidde - **Style:** Classic - **Power source:** Corded Electric - **Colour:** Black - **Item weight:** 0.1 Pounds - **Alarm:** Audible - **Material:** Plastic - **Number of items:** 1 - **Manufacturer:** Lumtopia - **UPC:** 785577434471 696505167180 765044830968 094700432490 047871001231 ## Images ![Kidde SM120X 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. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/560835485-kidde-sm120x-interconnect-accessories-smoke-relay-module](https://www.desertcart.vn/products/560835485-kidde-sm120x-interconnect-accessories-smoke-relay-module) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-06-18*