---
product_id: 110783738
title: "Qolsys QS1134-840 IQ Wireless S-Line Encrypted Recessed Door/Window Sensor"
brand: "qolsys"
price: "583 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/110783738-qolsys-qs1134-840-iq-wireless-s-line-encrypted-recessed-door
store_origin: DK
region: Denmark
---

# 600 ft range 1 CR2 battery S-Line encryption Qolsys QS1134-840 IQ Wireless S-Line Encrypted Recessed Door/Window Sensor

**Brand:** qolsys
**Price:** 583 kr
**Availability:** ✅ In Stock

## Summary

> 🔐 Secure Your Space, Simplify Your Life!

## Quick Answers

- **What is this?** Qolsys QS1134-840 IQ Wireless S-Line Encrypted Recessed Door/Window Sensor by qolsys
- **How much does it cost?** 583 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/110783738-qolsys-qs1134-840-iq-wireless-s-line-encrypted-recessed-door)

## 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

- • **Stay Informed:** Receive intelligent notifications like 'door left open' to enhance your home security.
- • **Enhanced Security:** S-Line encryption ensures your signals are protected from unauthorized access.
- • **No Hassle Installation:** Battery-powered design means no wiring is required—install it anywhere with ease.
- • **Seamless Compatibility:** Works effortlessly with 319.5 MHz wireless panels, including GE/Interlogix and Qolsys IQ.
- • **Extended Wireless Range:** Enjoy a robust wireless range of up to 600 feet from the panel for maximum flexibility.

## Overview

The Qolsys QS1134-840 IQ Wireless S-Line Encrypted Recessed Door/Window Sensor is a cutting-edge security solution that offers intelligent notifications, seamless compatibility with various wireless panels, and a hassle-free battery-powered installation. With a maximum range of 600 feet and advanced S-Line encryption, this sensor ensures your home remains secure and connected.

## Description

Monitor a door or window without letting potential intruders know by installing the Qolsys IQ Wireless S-Line Encrypted Recessed Door/Window Sensor (AKA the IQ Recessed-S). This wireless battery-powered sensor installs into the core of your door to become nearly invisible.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, the sensor sends intelligent notifications to your panel, like "door left open". Notifications can be custom-named, so you can know exactly what's going on. Name notifications for the sensor at your front door, for example, "front door left open". For each sensor, you can also determine a unique chime type and turn voice prompts On/Off. Additionally, the sensor can be included in automation rules. For example, you could create a rule that adjusts your thermostat when a door is left open.Provides intelligent notifications such as "door left open"Compatible with 319.5 MHz wireless panels, such as GE/Interlogix or Qolsys IQWireless range up to 600 feet from panel"S-Line" encryption protects signalsBuilt-in tamper switch triggers alert if cover is removedBattery-powered, no wiring requiredHow It WorksThe Recessed Door/Window Sensor consists of two components: the sensor and the magnet. The sensor installs into a 3/4-inch hole drilled into the door/window frame (or the door itself if preferred), and the magnet installs on the door/window itself (or the frame if the sensor is installed in the door). When the sensor detects the magnet has moved more than 1 inch, a notification is triggered.Additional Features:Using Alarm.com (requires optional subscription), you can get a text if your door or window is left openTriggers alerts for tamper, tamper restore, alarm, alarm restore, and low batteryAbout 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.ContentsRecessed Door/Window SensorRare Earth MagnetBattery (pre-installed)InstructionsNOTE: 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 #: QS1134-840UPC: N/AColor: WhiteBattery: 3V CR2 (x1) included; Replace with exact replacement every 5 years.Transmitter Frequency: 319.5 MHzWireless Signal Range: 600 feet (200 m), open air.Code Outputs: tamper, tamper restore, alarm, alarm restore, low battery. Unique code ID.Supervisory Keep-Alive Interval: 70 minutesRF Peak Field Strength: typical 36000 uV/m at 3mOperating Temperature: 14° to 122°C (-10° to 50°C)Relative Humidity: 5 to 95 percent, non-condensingStorage Temperature: -40° to 176°F (-40° to 80°C)Dimensions:Sensor: 0.75(H) x 2.25(D) inchesMagnet: 0.63(H) x 075(D) inchesApprovals: FCC, ICWarranty: 1-Year Limited

## Features

- Provides intelligent notifications such as "door left open"
- Compatible with 319.5 MHz wireless panels, such as GE/Interlogix or Qolsys IQ
- Battery-powered, no wiring required
- Wireless range up to 600 feet from panel
- S-Line encryption protects signals

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Number of Batteries | 1 CR2 batteries required. |
| Power Source | Battery Powered |
| Maximum Range | 600 Feet |
| Mounting Type | Door Mount |

## Product Details

- **Brand:** Qolsys
- **Color:** White
- **Power Source:** Battery Powered
- **Maximum Range:** 600 Feet
- **Mounting Type:** Door Mount

## Images

![Qolsys QS1134-840 IQ Wireless S-Line Encrypted Recessed Door/Window Sensor - Image 1](https://m.media-amazon.com/images/I/41p7LBpIjSL.jpg)

## Frequently Bought Together

- Qolsys QS1134-840 IQ Wireless S-Line Encrypted Recessed Door/Window Sensor
- QOLSYS IQ DW MINI S-LINE Encrypted Door/Window Sensor QS1135-840
- Qolsys QS1431-840 IQ Wireless S-Line Encrypted Glass Break Sensor

---

## 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.dk/products/110783738-qolsys-qs1134-840-iq-wireless-s-line-encrypted-recessed-door](https://www.desertcart.dk/products/110783738-qolsys-qs1134-840-iq-wireless-s-line-encrypted-recessed-door)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-25*