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Duotone panel — violet briefing on the left, lime-sealed detail sheet on the right.
HC SR501 PIR Sensor (Passive Infrared Sensor) + IR Proximity Sensor 12V 4020 Turbo Blower Cooling Fan 3D Printer Purpose Built 3 Piece Design: Each heat Purpose Built 3 Piece Design: Each heat sink is individually sized to match the exact footprint of the Raspberry Pi 4B's CPU Designed for laser based communication and more Origin Original Authentic modules Warranty 7 day warranty on manufacturing defects Support Email & WhatsApp 24 7 Key Features Two complementary sensor technologies at one bundled price
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