---
product_id: 207038484
title: "Qolsys QS1231-840 IQ Wireless Motion-S Sensor"
brand: "qolsys"
price: "€ 80.69"
currency: EUR
in_stock: true
category: "Qolsys"
url: https://www.desertcart.pt/products/207038484-qolsys-qs1231-840-iq-wireless-motion-s-sensor
store_origin: PT
region: Portugal
---

# Pet immune up to 40 lbs 30 ft motion detection range Encrypted S-Line tech Qolsys QS1231-840 IQ Wireless Motion-S Sensor

**Brand:** qolsys
**Price:** € 80.69
**Availability:** ✅ In Stock

## Summary

> 🔐 Stay secure, stay smart — motion sensing redefined.

## Quick Answers

- **What is this?** Qolsys QS1231-840 IQ Wireless Motion-S Sensor by qolsys
- **How much does it cost?** € 80.69 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/207038484-qolsys-qs1231-840-iq-wireless-motion-s-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

- • **Seamless Compatibility:** Works flawlessly with Qolsys IQ Panels and legacy 319.5 MHz systems for easy integration.
- • **Smart Automation Ready:** Trigger custom rules like lighting or alarms instantly when motion is detected.
- • **Pet-Friendly Protection:** Ignores pets up to 40 lbs, so your furry friends don’t set off false alarms.
- • **Next-Level Signal Security:** Encrypted S-Line technology ensures your alerts are private and tamper-proof.
- • **Wide-Angle Motion Detection:** Covers up to 30 feet with an 80° sensing angle for comprehensive room monitoring.

## Overview

The Qolsys QS1231-840 IQ Wireless Motion-S Sensor combines encrypted S-Line technology with a 30-foot detection range and pet immunity up to 40 lbs, delivering reliable, smart home security that integrates with both modern IQ Panels and legacy systems.

## Description

The IQ Motion-S is an encrypted PIR that is as powerful as it is affordable. Leveraging our proprietary S-Line Technology it encrypts signals sent to the IQ panel while still providing support for legacy 319.5 systems. Pet immune up to 40 pounds, the IQ Motion-S is designed to mount on a flat surface or in a corner. SPECIFICATIONS - Code outputs: paring, tamper, tamper restore, alarm detect motion, alarm restore, supervisory, low battery - Transmitter frequency: 319.5MHZ +-15KHz - Transmitter bandwidth: 24KHZ - Modulation type: ASK-OOK - RF output power 91.1dBuV +/- 5% at 3m - Sensor Range 30 ft (9.1 m) x 40 ft (12.2 m) - Maximum Horizontal Sensing Angle 80° - Operating Temperature: -10˚C~50˚C - Relative Humidity: 5-95% - Non-Condensing Storage Temperature: -40˚C to 80˚C

## Features

- Encrypted S-Line sensor technology protects signals sent to the IQ Panel while still providing support for legacy 319.5 systems
- Provides security coverage up to 30’ in a large open area
- Use to create rules such as “When someone enters the room, turn on light” or “Trigger alarm when intruder detected”
- Pet immune up to 40 lbs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B085PYMPQX |
| Antenna Location | Walkway |
| Battery Description | 2 x AAA (Alkaline) |
| Best Sellers Rank | #47,214 in Electronics ( See Top 100 in Electronics ) #198 in Motion Detectors (Electronics) |
| Brand | Qolsys |
| Color | white |
| Compatible Devices | Qolsys IQ Panel, Smart Home Hubs |
| Customer Reviews | 4.0 4.0 out of 5 stars (61) |
| Frequency | 319.5 MHz |
| Item Weight | 4 ounces |
| Manufacturer | Qolsys |
| Maximum Range | 40 feet |
| Mfr Part Number | QS1231-840 |
| Model Number | QS1231-840 |
| Mounting Type | Wall Mount |
| Number of Batteries | 2 AAA batteries required. (included) |
| Operating Temperature | 50 °C |
| Power Source | Battery Powered |
| UPC | 608597381009 048994996718 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 122 °F |

## Product Details

- **Brand:** Qolsys
- **Color:** white
- **Item Weight:** 4 ounces
- **Maximum Range:** 40 feet
- **Power Source:** Battery Powered

## Images

![Qolsys QS1231-840 IQ Wireless Motion-S Sensor - Image 1](https://m.media-amazon.com/images/I/41uU1EFMr3L.jpg)

## Frequently Bought Together

- Qolsys IQ Motion-S QS1231-840
- QOLSYS IQ DW MINI S-LINE Encrypted Door/Window Sensor QS1135-840
- Qolsys DW Mini-S (2-Pack) Wireless Contact Sensor for Windows & Doors - S-Line Encrypted 319.5 MHz - Window Alarm Sensor for Smart Home - Create Personalized Notifications & Rules

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**Shop now:** [https://www.desertcart.pt/products/207038484-qolsys-qs1231-840-iq-wireless-motion-s-sensor](https://www.desertcart.pt/products/207038484-qolsys-qs1231-840-iq-wireless-motion-s-sensor)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-09-27*