PIR sensors allow you to sense motion, almost always used to detect whether a human has moved in or out of the sensors range.
They are small, inexpensive, low-power, easy to use and don't wear out.
There are two adjustable potentiometers on the module, you can use them to change the trigger sensitivity and the duration of the trigger signal.
The clear acrylic bracket is the perfect accompaniment to the HC-SR501.
It has two screw holes for the module to be attached to the bracket, and two to connect the bracket securely to your project.
Nuts and screws are also included.
Specifications:
Input Voltage : DC 3.6-20V
Standby current : 50uA
Output signal : 0V or 3.3V (Output high when motion detected)
Sentry Angle : <100 degree
Sentry Distance : 7m (max)
Jumper for setting override trigger : H - Yes, L - No
Operating Temperature : -15 - 70°C
Delay time adjustable via on-board trimpot
Blocking time adjustable via on-board trimpot
Lens : 23mm diameter
Bracket dimensions : ~47.5 x 39.8 x 2.7mm
Package includes: (PIR PCB may be blue or green n colour)
1pc, 2pcs or 5pcs HC-SR501 PIR Motion Sensor
1pc, 2pcs or 5pcs 3-wire DuPont cable. Please specify Male to Female (default) or Female to Female.
or
1x HC-SR501
1x Acrylic Mounting Bracket inc. screws & nuts
3-wire DuPont cable. Please specify Male to Female (default) or Female to Female.
or
Just 2-Sets of Brackets
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