The SparkFun OpenPIR is a highly customizable Passive Infrared（PIR）sensor based around the NCS36000 PIR controller. Passive infrared（PIR）sensors are able to detect motion in a small/local area ?-- they're the sensor of choice in security systems, home automation and proximity-sensing applications. The OpenPIR allows you to set the sensitivity, trigger time and pulse mode of the motion sensor so you can tailor-fit it to your application！
The OpenPIR has a multitude of characteristics unique to itself, including two trimpots to adjust sensitivity（view distance）and the oscillator to control the length of time the output remains HIGH, as well as a trigger that supports two motion-detection modes：single-pulse and dual-pulse. Additionally, each OpenPIR is equipped with a reverse-entry green LED, which duplicates the status of the OUT pin. When motion is detected, the LED will illuminate; otherwise it will remain off.
The SparkFun OpenPIR supports a power supply range of 3VDC to 5.75VDC at 80μA standby（3mA when detecting motion）and is able to be connected via a standard 0.1" header or a 4-pin JST PH connector.
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