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The HC-SR501 Pyroelectric Infrared Sensor is used to detect the presence of people. It is commonly used in turning the lights on and off automatically when people arrive or leave. It is very reliable for robot projects which need human detection.
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The HC-SR501 sensor is based on pyroelectric infrared technology, it features high sensitivity, high reliability, and low-voltage operation. It is widely used in alarms and auto-sensing electrical equipment, especially in battery-operated products.
250 m Green Wire Mini Roll 0.5 mm External...
$7.20
6 x 2p 2.54 mm Male Pin Header See description...
$0.12
This is a 0-30 V red panel voltmeter showing...
$2.40
• 1.0 1571-28 line: Each copper wire 0.12...
$0.12
Black 9060 Propeller with 6 mm Hole See...
$1.92
FC-10p 2.54 mm Cable (30 cm) See description...
$0.96
Kit - Compatible with Arduino MEGA
$28.56
10F/2.5V Superconductor 12 x 25mm
$2.40
PH2.0 Socket 3p
$0.12
THE CASE DOES NOT INCLUDE SCREWS AND SPACERS!...
$4.08