--- product_id: 84504351 title: "QS1431-840 IQ Wireless S-Line Encrypted Glass Break Sensor" brand: "qolsys" price: "$132.40" currency: USD in_stock: true reviews_count: 2 url: https://www.desertcart.us/products/84504351-qs1431-840-iq-wireless-s-line-encrypted-glass-break-sensor store_origin: US region: United States of America --- # 25 ft detection range Battery-powered, wire-free S-Line encrypted signals QS1431-840 IQ Wireless S-Line Encrypted Glass Break Sensor **Brand:** qolsys **Price:** $132.40 **Availability:** ✅ In Stock ## Summary > 🔒 Stay one step ahead with encrypted, wireless glass break detection! ## Quick Answers - **What is this?** QS1431-840 IQ Wireless S-Line Encrypted Glass Break Sensor by qolsys - **How much does it cost?** $132.40 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/84504351-qs1431-840-iq-wireless-s-line-encrypted-glass-break-sensor) ## Best For - qolsys enthusiasts ## Why This Product - Trusted qolsys brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Extended 25-Foot Range:** Covers large windows and entry points with reliable detection. - • **Hassle-Free Installation:** Battery-powered design means zero wiring—install anywhere, anytime. - • **Military-Grade Encryption:** S-Line encryption ensures your security signals stay private and tamper-proof. - • **Seamless Wireless Integration:** Compatible with 319.5 MHz panels like GE/Interlogix & Qolsys IQ for effortless setup. - • **Precision Glass Break Detection:** Pinpoints breaking glass by pitch & frequency for unmatched security. ## Overview The Qolsys QS1431-840 IQ Wireless S-Line Encrypted Glass Break Sensor offers advanced pitch and frequency detection of breaking glass up to 25 feet away. Compatible with popular 319.5 MHz wireless security panels, it features robust S-Line encryption for secure signal transmission and a battery-powered, wire-free design for easy installation. ## Description Know when an intruder breaks your window by installing the Qolsys IQ Wireless S-Line Encrypted Glass Break Sensor (AKA the IQ Glass). Used with any compatible control panel/receiver (319.5 MHz wireless frequency), such as a GE/Interlogix Panel (NetworX, Simon, etc.) or a Qolsys IQ Panel, this wireless, battery-powered sensor detects the pitch and frequency of breaking glass up to 25 feet away. The sensor easily mounts with the included screws, typically placed on the wall opposite to the monitored window, or on the ceiling, to allow for optimum detection in a large living area, such as a family room.Detects breaking glass windows up to 25 feet awayListens for the pitch and frequency of breaking glassCompatible with 319.5 MHz wireless panels, such as GE/Interlogix or Qolsys IQWireless range up to 600 feet from panel"S-Line" encryption protects signalsBattery-powered, no wiring requiredAbout S-Line EncryptionQolsys wireless devices that feature S-Line ("Secure Line") technology offer advanced encryption to safeguard your wireless signals against hacking.The technology employs an advanced encryption scheme between the wireless sensor/device and the control panel to ensure that wireless event transmissions are always unique, preventing and eliminating common replay attacks (when an unscrupulous person uses an easy-to-purchase software-defined radio or "listening device" to replay events that were previously sent by wireless devices paired with a security system.) At time of pairing, S-Line technology passes a unique key which enables the encryption algorithm for unique event transmissions, thereby preventing such replay attacks.ContentsGlass Break SensorBatteries (pre-installed)Mounting ScrewsWall AnchorsInstructionsNOTE: Requires connection to a compatible control panel/receiver (319.5 MHz wireless frequency), such as a GE/Interlogix Panel (NetworX, Simon, etc.), Qolsys IQ Panel, Leviton 64-Zone Receiver for GE/Interlogix, Elk M1 Wireless Receiver for GE/Interlogix Crystal Transmitters, or other legacy 319.5 MHz system (all sold separately).Technical DetailsManufacturer Part #: QS1431-840UPC: 854545006979Color: WhiteBattery: CR123A 1550mAH (x2) includedSensing Parameters: Maximum 25 feetMounting Spec: At least 3.3 feet from windows being protected, and 4 feet from sources of noiseMounting Hardware: #4 or #6 screwsTemperature Range: 14° to 120°F (-10° to 48°C)Dimensions: 2.75(H) x 3.88(W) x 1.5(D) inchesApprovals: FCC, ICWarranty: 1-Year LimitedCompatible 319.5 MHz Wireless Panels/Receivers*GE/Interlogix Panel (NetworX, Simon, etc.)Qolsys IQ Panel (Version 1 or 2)Leviton 64-Zone Receiver for GE/Interlogix (part 42A00-2)Elk M1 Wireless Receiver for GE/Interlogix Crystal Transmitters (part ELK-M1XRFEG)*Panels and receivers are sold separately. ## Features - Detects breaking glass windows up to 25 feet away - Listens for the pitch and frequency of breaking glass - Compatible with 319.5 MHz wireless panels, such as GE/Interlogix or Qolsys IQ - S-Line encryption protects signals - Battery-powered, no wiring required - Detects breaking glass windows up to 25 feet away - Listens for the pitch and frequency of breaking glass - Compatible with 319.5 MHz wireless panels, such as GE/Interlogix or Qolsys IQ - S-Line encryption protects signals - Battery-powered, no wiring required ## Product Details - **Brand:** Qolsys - **Color:** White - **Power Source:** Battery Powered - **Item Weight:** 0.2 Pounds - **Maximum Range:** 25 Feet ## Images ![QS1431-840 IQ Wireless S-Line Encrypted Glass Break Sensor - Image 1](https://m.media-amazon.com/images/I/41VxDHkCITL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good quality *by J***J on November 17, 2020* Good quality ### ⭐ Product Quality Poor , *by Y***L on April 17, 2019* Sudden loss of signal after months of use. New batteries, still no connection. ## Frequently Bought Together - Qolsys QS1431-840 IQ Wireless S-Line Encrypted Glass Break Sensor - Qolsys IQ Panel 4: Wireless Smart Home Security System Alarm Panel for House Protection and Home Automation. Easily Integrate with Alexa, Window Alarms, Cameras and More. 319.5 MHz --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/84504351-qs1431-840-iq-wireless-s-line-encrypted-glass-break-sensor](https://www.desertcart.us/products/84504351-qs1431-840-iq-wireless-s-line-encrypted-glass-break-sensor) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-04-23*