Electronic Spices HC-SR501 Pyroelectric Infrared PIR Motion Sensor Modules for Microcontrollers for Electronic school science Projects (Motion Sensor)

About this item

• Infrared Sensor with Control Circuit Board
• The Sensitivity and Holding Time are adjustable.
• Blockade time: 2.5s (Default)
• Sensitive Setting: Turn to Right, Distance Increases (About 7M); Turn to Left, Distance Reduce (About 3M)
• detect sense motion and almost always used to detect whether a human has moved in or out of the sensors range.