HiLetgo 3pcs Mini SR602 Motion Sensor Detector Module Pyroelectric Infrared Sensory Switch High Sensitivity for Arduino PI

What is the size of each module? (*NOT* the size of the package)

What is the sensitivity with different sensitivity resistors? a table of delay time versus resistance is given. not sensitivity. comes with zero ohm.

When there's continuous motion, does the output remain high or does it toggle low/high continuously?

What is the volt. regulator on these things?? As far as i can tell, they don't actually exist except on these sensors!! A datasheet... something??!