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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.
5630 SMD LED bar with diffuse color temperature...
$8.40
This battery case can hold 1 x 18650 3.7 V...
$0.84
The module is an LED display with 7-segment...
$1.92
Black Banana Plug 4mm
$2.79
Share your music Easily split your audio cable...
$0.44
This is a single row 8 position female pin...
$0.19
This proximity sensor can be used in various...
$3.60
This is a A2212 brushless motor with banana...
$14.40
3 x 6 x 2.5 mm SMD Button (White) See...
$0.07
PCB Thermal Transfer Paper (10 sheets)
$3.12