Technical data of the HC-SR501 Motion and Sensor Modules:

Input voltage: 4.5 V - 20 V
Digital output when motion is detected: 3.3 V (high)
Digital output with no movement on the HC-SR501: 0 V (low)
Working temperature in the environment: 15 ° C to 70 ° C
Delay Time 0.5 to 200 seconds
Angle of coverage: 100 °
Reach 5m 7m
Size of the HC-SR501 motion:

Sensor Lens diameter: 23mm
Length: 24.03mm
Width: 32.34mm
Height (with lens): 24.66mm
Center screw hole spacing: 28 mm
Screw hole diameter: 2mm (M2)