unum pir

unum PIR Indoor Motion Detector

The PIR Motion Detectors unum are professional state of-the-art motion sensors engineered with the world’s best components and materials.
These detectors provide the highest degree of reliability in motion detection, without the risk of false alarms.
Additionally the unum series introduces in the market the only detectors with trendy invisible lens, i.e. the lens integrated into the front cover thanks to E.L.T. (Embedded Lens Technology) which takes advantage from decades of experience in designing professional lens.
The PIR side starts with a EvenEye lens and a top-quality infrared detector.
Next, a modern DSP ASIC (patent-pending) converts the infrared detector signal into digital form, for best reliability and stability. Finally, the signal is evaluated by the ASIC’s HighBar processor, for “best in-class” false alarm rejection with excellent intruder detection.

Alarm processing

Dual-element detector fields-of-view alternate between (+) and (-) polarity.
HighBar-qualified signal events are counted as “pulses” exclusively when polarity alternates. Depending on sensitivity setting, (+,-), (-,+), (+,-,+) or (-,+,-) will cause an alarm.

why unum

  • because they are “state-of –the-art” Professional Motion Detectors realized with the very best components and materials to guarantee, at first place and without compromises, the highest possible degree of reliability available from the most modern Technologies;
  • because they have a unique aesthetic - minimalist and discreet different from the rest, being the result of many studies and suggestions collected from Interior Architects and End-users, who wanted something that could actually merge, integrate with their architecture styles to the point to become themselves active players to that instead of being something “not too nice but necessary to be installed” to the purpose of having an intrusion system up and running;
  • because unum detectors apply the new ELT Technology (Embedded Lens Technology), which takes advantage from decades of experiencein designing professional lens for motion detection purposes, thus enabling to achieve the objective to literally make the lens disappearing from the detector profile, thanks to very sophisticated techniques which also use the same special material of the lens (HDPE), to basically allow it to be fully embedded, completely integrated in the front cover itself;
  • because they do not need, unlike other products in the market, to have on their front side all those colored lights (LEDs which very often the installers need to disable because too annoying for the endcustomers;
  • because all the different detector models, although having different functions, like as the simple PIR or Dual-Tech, with or without Pet Immunity, all of them have the same design and size, so to avoid the unpleasant view of different detectors shapes on the walls, too often in the same room or environment;
  • because they have a truly wide operating temperature range;
  • because, they are eco-friendly, in line with Ksenia Security Company’s belief, all unum utilize components like as DSP ASIC with very low consumption.



The PI-PIR Motion Detector unum is designed to allow the presence of pets (10 kg or lighter) without signaling an alarm.
It includes a special micro-element lens array that produces much stronger optical signals for humans than for pets.
Furthermore, the optical sensitivity of each PI-PIR Motion Detectors unum is factory-calibrated to ensure accurate discrimination between humans and pets.
The diagram below shows those zones of greatest human/pet discrimination by the PI-PIR Motion Detector unum.It should be mounted so that pets will occupy only the lighter-colored spaces.

Snodo sensore unum


  • IR Sensor: Dual-Element-Pyroelectric
  • Power Supply: 8-16 Vdc; 24 mA at 12 Vdc
  • Alarm Relay: Solid State, 60V, 50 mA, isolation 1500 Vrms
  • Tamper Switch: Form A contact, normally closed (NC) 50 mA at 30 Vdc
  • Events Detection: HighBar false alarm rejection processor
  • RF Immunity: 20 V/m, 10-1000 MHz;10 V/m, 1-2 GHz
  • White Light Immunity: 6500 lux
  • Sensitivity: Selectable: 2-event or 3-event
  • Operating Temperature Range: +5°C to +40°C
  • Housing Material: Base: ABS, Cover: HDPE
  • Overall Dimensions: 113×60×45 mm (H×W×D)
  • Pet immunity: up to 10 Kg


  • KSI5101000.300 - PIR
  • KSI5101100.300 - PIR + Pet Immune


  • KSI5900003.000 - Wall-Mounting Bracket
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