Qolsys IQ Mini Door Window Sensor - QS1135-840

The Qolsys brand IQ Mini Door/Window Sensor QS1135-840 is an excellent choice to add to your system. This DW sensor is compatible with all Qolsys brand IQ Panels with a 319.5MHz radio, including the IQ Panel 4 IQP4001.

Specs & Guides

Manufacturer Qolsys
Part number QS1135-840
Dimensions 2.25”H x 1”W x .5”D
Wireless signal range 600ft (200M) in open air
Signals Alarm, alarm restore, tamper, tamper restore, low battery
Transmitter frequency 319.5 MHz
Wireless protocol S-Line
Supervisory keep-alive interval 70 minutes
RF Peak field strength Typical 36000 uV/m at 3m
Operating Temperature -10C~50C
Relative Humidity 5-95% Non-Condensing
Storage Temperature -40-80C
Battery 3V Lithium (x2)

How to install the QS1135-840

Physical installation of the Qolsys QS1135-840 wireless door/window sensor should follow the manufacturer’s instructions found in the product installation manual. Installation steps from the QS1135-840 manual are below:

Mounting the QS1135-840

  1. Choose Installation Location. This sensor works best for Sliding Glass Doors, Garage Doors, Windows, Exterior Doors, Interior Doors, Medicine Cabinets, and Gun Safes.
  2. Remove Battery Tabs.
  3. Apply Adhesive Mounting Tape to back of sensor and magnet.
  4. Line Up Sensor and Magnet using the Magnet Locator Mark on the Sensor.
  5. Secure Sensor and Magnet with the Adhesive Mounting Tape to the installation location. Magnetic Gap should not exceed 3/4".

The link for the full installation manual for the QS1135-840 is below.

Programming the QS1135-840 with the Qolsys IQ Panel

  1. Place the IQ Panel into Auto-Learn Mode. To do so, at the panel navigate to:

    • Settings
    • Advanced Settings
    • Enter your Installer or Dealer Code
    • Installation
    • Devices
    • Security Sensor
    • Auto Learn Sensor
  2. With the panel in Auto-Learn Mode, open and close the sensor case to tamper the sensor

  3. Program the sensor as needed. Then Click Add to finalize programming.

Programming Instructions for the QS1135-840 can be found here: