Product DescriptionSODIAL(R) HC-SR501 Human Sensor Module Pyroelectric Infrared BlueColor: BlueDelay time: 5-200S (adjustable) the range is (0.xx second to tens of second)Block time: 2.5S (default) Can be made a range (0.xx to tens of seconds)Board Dimensions: 32mm*24mmAngle Sensor: Less than 100 cone angleOperation Temp: -15 - +70 ¡æLens size sensor: Diameter:23mm(Default)Package Include:1* HC-SR501 Human Sensor ModuleNote:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm.