Microwave Motion Detection Sensor (RCWL-0516) Shift Register This sensor can be useful

This sensor can be useful when you want a circuit to be able to respond to knocks that a user makes against them to turn on or off some load

Push Button 6X6 - 2 Pins (4 pieces )

then obviously

If you want to start an IoT project

Wavelenght ( Laser VCSEL):940nm

Microwave Motion Detection Sensor (RCWL-0516) Shift Register This sensor can be usefulIntroduction : Equipped with RCWL 9196 chip supporting 4 28V wide voltage input, high level signal output when detecting the motion with active repeat trigger 360 degree no blind angle detection with 5 7m deteciting distance, the detection not affected by the surroundings, better performance than the IR sensor. Support night detecting function turn on off, adjustable repeat trigger time and detecting distance by add the SMD components to the