Description
HC-SR505 Mini PIR Motion Sensor is based on infrared technology and it can automatic control by itself with high sensitivity and high reliability. Because of the minimum size and low-power operation mode, it widely used in various of automatic electronic equipment, especially battery-powered automatic products.

Features
Automatic Control
Minimum size
Repeatable Trigger
Wide range of operating voltage
Low-power
Output high signal

Applications
Body induction lamps
Body induction toys
Security Products
Industrial automation and control
Auto-sensing of electrical equipment
Battery-powered automatic control

Specification
Operating voltage range: DC4.5 - 5.5V
Quiescent Current: to60uA
Level output: Gao 3.3V / Low 0V
Trigger: reusable trigger (default)
Delay Time: The default 8S + -30%
Board Dimensions: 10 * 23mm
Induction angle: to100 degrees cone angle
Sensing distance: 3 meters
Working temperature: -20 to +80 degrees
Sensor Lens Dimensions: Diameter: 10mm

Tutorial :
http://rdiot.tistory.com/81