Motion sensor options

[tyler (Tyler G)]

Assuming you are using the IQ Panel 4 with 319.5MHz radio, you have a few options for motion sensors. The following are going to be the more universal indoor options:

• IQ Motion S-Line QS1231-840 319.5Mhz
• DSC PIR Motion PG9914 PowerG
• DSC PIR Microwave Motion PG9984P PowerG

Both the S-Line and PowerG are encrypted. PowerG sensors are going to have more robust encryption over the S-Line sensors.

PowerG sensors also have increased communication range over the 319.5MHz. More information on the differences can be found here:

Qolsys 319.5MHz S-Line and DSC PowerG Comparison

Qolsys brand S-Line sensors and DSC brand PowerG sensors both offer a variety of sensor types that utilize encryption for communication transmission, to ensure that sensor event transmissions are always unique, preventing and eliminating common replay attacks. The information below is what separates the S-Line sensors from PowerG sensors: Qolsys S-Line 319.5Mhz Encryption S-Line Sensors utilize an advanced encryption scheme between the sensor and the IQ Panel (2/2+ and 4). At time of pairing…

I am thinking an IQ Motion. Is there any reason it makes sense to spend more on a PG9914/PG9984P for such a small area?

Sensor Range, the area the sensor will reliably monitor, is going to vary slightly from unit to unit. Sensor Ranges are documented in the installation manual for the device, specs can be found linked above as well.

Overall, if communication range is a concern, go with PowerG. This is distance between the Sensor and the Panel.

Provided the area you want to cover is within the Sensor Range, you should be good to use the IQ Motion. If communication range is a concern, then the powerG options could be leveraged.

I am saying optional because the thought was that an intruder is going to traverse into the gathering room zone at some point.

When it comes to placement, the ideal is in the corner of a room facing entryways to cover movement to and from a room. Specific mounting instructions, like height, will vary. Manufacturers guidelines should be followed when mounting (as dictated by the manual).

In general , it is best to avoid mounting the motion near a heat source (HVAC) or pointed towards a window (sunlight). As the motions detector temp change, both of these will cause false triggers. Other causes of false triggers when using motion sensors can be found here:

Why did my sensor cause a false alarm?

Motion Detector False Alarms Is it mounted per manufacturer instructions? Each Motion Detector will be designed and tested with a specific mounting height. The manual will indicate how high to mount the detector on the wall. Mounting outside of that parameter may cause unexpected behavior. Make sure the detector is away from air vents, fans, and drafts. Do not point the motion detector at windows where sunlight might shine in on the lens. Make sure it is properly angled per instructions if ne…

looking for thoughts on if giving up the range would be a bad idea, or there is some other reason having a DualTec sensor would be more desirable for this area.

The PG9984Ps added Microwave technology is going to cut down on false triggers. It is also going to offer more Sensor Range over that of the other two listed sensors. as well as better Communication Range over the IQ Motion.