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Qolsys IQ Wireless S-Line Mini Door/Window Sensor, White (QS1135-840)

Brand: Qolsys

Monitor the open/closed status of a door or other open/close object with the Qolsys IQ Wireless S-Line Encrypted Mini Door/Window Sensor (AKA the IQ Mini-S). 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 sends intelligent notifications to your panel, such as "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 IQ
  • Wireless range up to 600 feet from panel
  • "S-Line" encryption protects signals
  • Built-in tamper switch triggers alert if cover is removed
  • Easily mounts with included adhesive
  • Battery-powered, no wiring required

How It Works

The Mini Door/Window Sensor consists of two components: the sensor and the magnet. The sensor installs on the door/window frame, and the magnet installs on the door/window itself. When the sensor detects the magnet has moved more than 1 inch, a notification is triggered.

Because a rare earth magnet is used, you have flexible mounting options. Boasting up to eight years of battery life, the sensor uses an innovative board and antenna design to extend range and allow mounting on a variety of surfaces.

Possible Applications:

  • Swing door
  • Sliding glass door
  • Garage door
  • Window
  • Medicine cabinet
  • Safe

Additional Features:

  • Can be programmed as "Safety Sensor" for medicine cabinets, safes, etc.
  • Using Alarm.com (requires optional subscription), you can get a text if your door or window is left open
  • Triggers alerts for tamper, tamper restore, alarm, alarm restore, and low battery

About S-Line Encryption

Qolsys 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.

Contents

  • Mini Door/Window Sensor
  • Rare Earth Magnet
  • Batteries (pre-installed)
  • Mounting Adhesive
  • Instructions

NOTE: 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).

Product Features

Compatible 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.

Technical Details

  • Manufacturer Part #: QS1135-840
  • UPC: 854545006115
  • Color: White
  • Gap: up to 3/4 inch
  • Battery: 3V Lithium (x2) included; Replace with exact replacement every 5 years.
  • Transmitter Frequency: 319.5 MHz
  • Wireless 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 minutes
  • RF Peak Field Strength: typical 36000 uV/m at 3m
  • Operating Temperature: 14° to 122°C (-10° to 50°C)
  • Relative Humidity: 5 to 95 percent, non-condensing
  • Storage Temperature: -40° to 176°F (-40° to 80°C)
  • Sensor Dimensions: 2.25(H) x 1.0(W) x 0.5(D) inches
  • Approvals: FCC, IC
  • Warranty: 1-Year Limited
Brand: Qolsys
Isin: INMKIATIT2IE

$58.60

$58.87
0% off
  • Free shipping in US
  • Arrives:

  • Free 30-Day returns

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Ships from USA

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Qolsys IQ Wireless S-Line Mini Door/Window Sensor, White (QS1135-840)

Qolsys IQ Wireless S-Line Mini Door/Window Sensor, White (QS1135-840)

$58.60 $58.87 (0% off)

Monitor the open/closed status of a door or other open/close object with the Qolsys IQ Wireless S-Line Encrypted Mini Door/Window Sensor (AKA the IQ Mini-S). 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 sends intelligent notifications to your panel, such as "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 IQ
  • Wireless range up to 600 feet from panel
  • "S-Line" encryption protects signals
  • Built-in tamper switch triggers alert if cover is removed
  • Easily mounts with included adhesive
  • Battery-powered, no wiring required

How It Works

The Mini Door/Window Sensor consists of two components: the sensor and the magnet. The sensor installs on the door/window frame, and the magnet installs on the door/window itself. When the sensor detects the magnet has moved more than 1 inch, a notification is triggered.

Because a rare earth magnet is used, you have flexible mounting options. Boasting up to eight years of battery life, the sensor uses an innovative board and antenna design to extend range and allow mounting on a variety of surfaces.

Possible Applications:

  • Swing door
  • Sliding glass door
  • Garage door
  • Window
  • Medicine cabinet
  • Safe

Additional Features:

  • Can be programmed as "Safety Sensor" for medicine cabinets, safes, etc.
  • Using Alarm.com (requires optional subscription), you can get a text if your door or window is left open
  • Triggers alerts for tamper, tamper restore, alarm, alarm restore, and low battery

About S-Line Encryption

Qolsys 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.

Contents

  • Mini Door/Window Sensor
  • Rare Earth Magnet
  • Batteries (pre-installed)
  • Mounting Adhesive
  • Instructions

NOTE: 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).

Product Features

Compatible 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.

Technical Details

  • Manufacturer Part #: QS1135-840
  • UPC: 854545006115
  • Color: White
  • Gap: up to 3/4 inch
  • Battery: 3V Lithium (x2) included; Replace with exact replacement every 5 years.
  • Transmitter Frequency: 319.5 MHz
  • Wireless 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 minutes
  • RF Peak Field Strength: typical 36000 uV/m at 3m
  • Operating Temperature: 14° to 122°C (-10° to 50°C)
  • Relative Humidity: 5 to 95 percent, non-condensing
  • Storage Temperature: -40° to 176°F (-40° to 80°C)
  • Sensor Dimensions: 2.25(H) x 1.0(W) x 0.5(D) inches
  • Approvals: FCC, IC
  • Warranty: 1-Year Limited
  • Shipping Profile ID: 239879032020
  • Compatible Brand: Qolsys
  • Connectivity: Wireless
  • Color: White
  • UPC: 854545006115
  • EAN: Does not apply
  • Brand: Qolsys
  • Type: Door Sensor
  • Model: Qolsys 4331031023
  • MPN: 4331031023

 

Processing Time

  • We process and ship orders Monday through Friday, excluding holidays.
  • Most orders are processed within 1–3 business days, depending on product availability.
  • Processing time does not include delivery time, which varies based on your location and the product’s shipping origin.

Shipping Coverage

We currently ship to addresses within the United States only.

Products may ship from:

  • Our U.S. warehouses, or
  • Our international fulfillment centers (including Korea, Japan, China, Australia, Mexico, Canada, the United Kingdom, and the EU).

Each product page clearly displays the “Ships From” location before checkout.


Shipping Methods & Estimated Delivery

 

Shipping Method Estimated Delivery Cost
Free Shipping (US) 5–10 business days Free, available on eligible items
Standard Shipping (US to US by Item) 5–10 business days $6.50 for the first item, $2.00 each additional
Standard Shipping (From US Warehouse by Weight) 3–7 business days Starts at $6.50, increasing by $2 for every additional 4 oz (0.25 lb) up to 1 lb, then by $4 for each additional pound beyond 1 lb.
Extended Delivery (Ships from Overseas Warehouse) 10–15 business days $14.50 for the first item, $2.00 each additional

Shipping costs vary by product weight, quantity and origin. Exact rates and delivery estimates are displayed on each product page and confirmed during checkout.

Free Shipping

We offer free standard shipping on select products or during promotional periods. Availability of free shipping will be displayed on the product page and at checkout. 


Carriers

We primarily use USPS and UPS for U.S. deliveries. Items shipped from international warehouses may be handled by partner carriers depending on the country of origin.


Import Duties & Taxes

All import duties and taxes for goods imported into the United States are included in the product price. There are no hidden fees or additional charges at checkout.


Tracking & Notifications

Every order is fully trackable. You will receive a tracking number via email once your order ships. If your order ships in multiple packages, each package will have its own tracking number. If you don’t receive a shipping confirmation immediately, your order is still being processed and will arrive within the estimated timeframe shown at checkout.

You can track your shipment anytime using the Track Your Order page on our website.


Order Changes & Cancellations

If you need to modify or cancel an order, please contact our customer support team as soon as possible. Orders can only be canceled before they ship. Once shipped, cancellations are not possible, but you may request a return after the item is delivered.

Contact: support@ibspot.com


Item Not Received

If your tracking number shows “Delivered” but you haven’t received your package:

  1. Check with your local USPS or UPS office.
  2. Confirm that the shipping address provided was correct.
  3. If the issue remains unresolved, contact support@ibspot.com for assistance.

Damaged or Lost Parcels

If your package arrives damaged or fails to arrive, please contact us immediately. For deliveries to P.O. boxes, ibspot is not responsible for damage caused by weather, temperature, or theft.


Customer Support

For any questions about shipping, tracking, or delivery, our customer support team is here to help.

Email: support@ibspot.com

We’re always happy to help.

Please read our policy carefully before making a purchase.
We aim to ensure every customer has a smooth and transparent experience with ibspot.com.


Order Cancellation Policy

Customers may request to cancel an order before it has been shipped.
Once the package has been shipped, cancellations are no longer possible; however, you may still request a return after receiving your order.

How to Request a Cancellation

You can contact us through:

Please submit your cancellation request as soon as possible after placing the order to allow us to process it before shipment.


Return Policy

We accept returns for most items within 30 days of delivery for a full refund.

To be eligible for a return:

  • The item must be unused, in the same condition as received, and in its original packaging.
  • A tracking number must be provided to confirm the return shipment.

Non-Returnable Items

Certain products cannot be returned, including:

  • Perishable goods (for example, food, flowers, newspapers, magazines)
  • Intimate or sanitary goods
  • Hazardous materials or flammable liquids/gases
  • Gift cards
  • Downloadable software
  • Some health and personal care items

Partial Refunds (If Applicable)

Partial refunds may be granted in specific situations, such as:

  • Books with obvious signs of use
  • Opened CDs, DVDs, software, or vinyl records
  • Items not in their original condition, damaged, or missing parts not due to our error
  • Items returned more than 30 days after delivery

How to Return an Item

To initiate a return, please contact us at support@ibspot.com with your order number and details about the product you wish to return.
Our team will provide you with return instructions and a prepaid return label.


Shipping Cost for Returns

Please contact us before returning any item.
We will provide a free return shipping label.

If a return is sent back without prior contact or without our provided label, we cannot be held responsible for return shipping costs.

For items valued over $75, we recommend using a trackable shipping service or purchasing shipping insurance.
We cannot guarantee that we will receive your returned item if shipped independently.


Refund Processing

Once your return is received and inspected:

  • In-store returns are refunded to the original form of payment or issued as a gift card.
  • Mail-in returns using our prepaid label are refunded to the original payment method within 3–5 business days after we receive your return.

Please allow:

  • 5–7 business days for the return to reach our Returns Center.
  • An additional 3–10 business days for your bank to post the refund to your account.

Damages, Issues & Claims

Please inspect your order immediately upon receipt.
If you receive a defective, damaged, or incorrect item, contact us right away at support@ibspot.com.
We’ll evaluate the issue promptly and make it right.

Product Claims

Before purchasing, please review product details carefully.
If there is a problem with your order upon arrival, visit our Support Center or contact us directly to arrange return shipping or replacement.


Exchanges

We do not process direct exchanges.
The fastest way to get what you need is to return the original item and place a new order once your return is accepted.


Return Address

IBSPOT Return Center
15 Sawmill Ln
Dover Plains, NY 12522
United States


Customer Support

Our support team is available 24/7 to assist with cancellations, returns, or general inquiries.

Email: support@ibspot.com
Contact Form: Contact Us page

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