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 — theyre 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 the 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 80A standby (3mA when detecting motion) and is able to be connected via a standard 0.1\” header or a 4-pin JST PH connector. Get Started with the Sparkfun OpenPIR Guide Features Voltage Supply Range: 3VDC to 5.75VDC Standby Average Current: 80A Motion-Detected Average Current: 3mA (LED enabled) Integrated 2Stage Amplifier Internal LDO to Drive Sensor Internal Oscillator with External RC Single or Dual Pulse Detection Resources Schematic Eagle Files Hookup Guide Datasheet (NCS36000) GitHub