Siemens IS404 - Outdoor passive infrared detector

Product Profile

Intrunet outdoor PIR detectors from Siemens - an effective first line of defence against intruders

Creating layers of protection for a site or building can help ensure the highest levels of security.  As perimeters such as fences or external walls are the first point of entry for intruders, outdoor motion detectors have an important role to play in modern security systems, offering a first line of defence against intruders before they manage to gain access to the buildings or assets.

The Intrunet outdoor motion detectors from Siemens offer an effective way to limit damage to buildings and assets by triggering an alarm as soon as an intruder has entered the monitored outdoor perimeter.  Standard and high performance models are available to cater for the security needs of a wide range of applications, from logistics and warehousing sites to high risk infrastructure such as ports and airports, military sites, or power plants.

Expert outdoor motion detection from Siemens

The Siemens range of Intrunet outdoor PIR detectors offers proven reliability in harsh outdoor environments with changing conditions, and high effectiveness in pro-active surveillance, including when used in combination with CCTV.  As the first security layer an intruder has to overcome, perimeter surveillance systems using Intrunet external motion detectors enable real-time alarm verification, ensuring that prompt action can be taken before any damage is caused, and providing evidence gathering right from the onset.

A purposeful design

The range of Intrunet outdoor PIR detectors was designed for the protection of perimeters and fence lines.  With different models offering volumetric or medium and long-range curtain coverage, the security is maximised for all applications and risk levels.  Outdoor PIR detectors can be used to notify central monitoring stations that an intrusion is taking place and that further action is necessary.

The ideal complement to any modern security system

Outdoor motion detectors are ideal complements to any event-driven video surveillance system, enabling the conditional triggering of PTZ and dome cameras, as well as video switchers on alarm.  This facilitates alarm verification and investigation, and ensures appropriate action is taken on a timely basis.

A tried and tested performance

The range of Intrunet outdoor motion detectors features standard and high performance models to cater for medium to very harsh environments.

All models benefit from true temperature compensation, precision mirror optics and adaptive threshold decoding (ATD), enabling the sensitivity to be automatically adjusted to ambient conditions and ignore background interferences (wind, moving vegetation, etc).  High performance models are fitted with an integral heater and can be used in applications subjected to lower temperatures.

The Intrunet outdoor PIR detectors have been successfully combined with video surveillance systems in a wide range of applications, including:

  • Ports and airports
  • Banks
  • Power and water treatment plants
  • Hospitals
  • Public and historic sites and buildings
  • Military sites
  • Prisons and penitentiaries
  • Logistics and warehousing sites
  • Oil & gas sites


  • Anti-vandal feature (misalignment detection)
  • Mounting height up to 4 m for reduced risk of vandalism
  • Integrated wall-mount bracket
  • Adaptive threshold decoding (ATD)
  • Wide power supply range 10.5 to 30 V DC or 24 V AC
  • Low installation and maintenance cost
  • Precision mirror optics
  • Most advanced medium and long range gap-free curtain or volumetric coverage
  • Best probability of detection at lowest nuisance alarm rates
Read more

Technical Specification

Make Vanderbilt
Manufacturer Vanderbilt Industries
Model code IS404
PIR Detectors Yes
Coverage/ Range m 120
Temperature Compensation Yes
Electrical Specifications Power Supply: 10.5 ~ 28 V DC
Physical Specifications Dimensions mm: 328 x 128 x 100
Environmental Specifications Operating Temp oC: -20 ~ +60
Power Consumption 20 mA
Additional info

The integral mounting bracket allows alignment of the detector in any position.  Both detectors may be used in standalone manned intrusion detection systems or as part of a video surveillance system.  Applications include fenced or restricted areas like military camps, detention centres, government facilities, industrial sites, and private premises.

Download PDF version