Active infrared sensors act as proximity sensors and they are broadly used in obstacle detection/avoidance systems. Passive infrared (PIR ... sounder at its output as depicted in the below wiring ...

Unlike infrared optical sensors that use an LED transmitter and IR receiver, the PIR emits nothing. As its “passive” name ... light switches, alarm systems, and door openers.

Tempe, Arizona - Southwest Microwave, a leading global supplier of perimeter intrusion detection systems, has announced the introduction of the advanced Model 420 Passive Infrared (PIR ...

Want to set up a home security system, but don’t want to pay a monthly fee to a security company? Techradar has a detailed do-it-yourself project for a connected alert system using Raspberry Pi.

Vu Systems has completed development flight testing of what it describes as “civil aviation’s first passive ... the sensor even worked in conditions where visibility through the IR sensor ...

The video demonstrates how to wire up a Passive Infrared Sensor (PIR) using 4-core security cables. All Gallagher inputs are balanced 4-state inputs and must have two 4k7 resistors wired at the device ...