---
product_id: 388937578
title: "IQ DW MINI S-LINE Encrypted Door/Window Sensor QS1135-840"
brand: "qolsys"
price: "€ 66.31"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/388937578-iq-dw-mini-s-line-encrypted-door-window-sensor-qs1135
store_origin: FI
region: Finland
---

# Extended wireless range 8-year battery life Encrypted S-Line tech IQ DW MINI S-LINE Encrypted Door/Window Sensor QS1135-840

**Brand:** qolsys
**Price:** € 66.31
**Availability:** ✅ In Stock

## Summary

> 🔐 Secure your space, smartly and stylishly.

## Quick Answers

- **What is this?** IQ DW MINI S-LINE Encrypted Door/Window Sensor QS1135-840 by qolsys
- **How much does it cost?** € 66.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/388937578-iq-dw-mini-s-line-encrypted-door-window-sensor-qs1135)

## 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

- • **Legacy Friendly:** Supports older 319.5 MHz systems, so upgrading is smooth and future-proof.
- • **Long-Lasting Power:** Up to 8 years of battery life means set-and-forget peace of mind.
- • **Smart Home Integration:** Custom notifications and automation rules like lighting and thermostat control for next-level convenience.
- • **Unbreakable Signal Security:** Proprietary S-Line encryption keeps your home safe and hackers out.
- • **Effortless, Versatile Installation:** Ultra-compact design with adhesive and rare earth magnet for seamless mounting on doors or windows.

## Overview

The QOLSYS IQ DW MINI S-LINE QS1135-840 is a sleek, ultra-compact encrypted door/window sensor designed for seamless integration with IQ Panel 2 and legacy systems. Featuring proprietary S-Line encryption, an 8-year battery life, extended wireless range, and flexible mounting options, it delivers reliable security with smart home automation capabilities and easy installation.

## Description

IQ DW MINI S-LINE Encrypted Door/Window Sensor QS1135-840

## Features

- QOLSYS IQ DW MINI S-LINE Encrypted Door/Window Sensor QS1135-840
- Encrypted S-Line sensor technology protects signals sent to the IQ Panel 2 while still providing support for legacy 319.5 systems
- Can be easily mounted on doors or windows with included adhesive
- Aesthetically pleasing white-color
- Long: 2.3", Height: 0.5", Width: 1"

## Product Details

- **Brand:** Qolsys
- **Colour:** white
- **Power source:** Battery Powered
- **Item weight:** 0.03 Kilograms
- **Maximum range:** 600 Feet

## Images

![IQ DW MINI S-LINE Encrypted Door/Window Sensor QS1135-840 - Image 1](https://m.media-amazon.com/images/I/51J3oiR-ZEL.jpg)

## Frequently Bought Together

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

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**Shop now:** [https://www.desertcart.fi/products/388937578-iq-dw-mini-s-line-encrypted-door-window-sensor-qs1135](https://www.desertcart.fi/products/388937578-iq-dw-mini-s-line-encrypted-door-window-sensor-qs1135)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-21*