PIR sensors allow to sense motion, almost always used to detect whether a human has moved in or out of the sensor's range.
Specifications:

1. voltage: 5 VDC
2. connection: 3 pin: GND, VCC and OUT
3. adjustments: sensitivity and delay (by trimmer)
4. delay on time: 3 to 200 s
5. output level: high = 3 V, Low = 0 V
6. max. sensor distance: 7 m ( 23 ' )
7. operating temperature: -15 to +70°C ( 5 to 158 °F )
8. detection angle : 120 °
9. dimensions: 32 x 24 x 25 mm (1.26 x 0.95 x 0.98")

vma314_a4v02.pdf

vma314_scheme.pdf

vma314_code.zip

ce_rohs_open.pdf