Specification:Product type: HC--SR501 Body Sensor ModuleOperating voltage range: DC 4.5-20VQuiescent Current: <50uATrigger: L can not be repeated trigger/H can be repeated trigger(Default repeated trigger)Delay time: 5-18S(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 secondsBoard Dimensions: 32 mm*24 mmAngle Sensor: <100 ° cone angle Lens sizeSensor Diameter:23mm(Default)Applications:1. As per the HC-SR501 data sheet, stops detecting ("detection range is shorter") as temperature approaches 30 degrees celsius (approximately 90 degrees fahrenheit).2.These units have the through-holes to add a thermistor to improve high temperature performance, pins fit well into female dupont wires for prototyping, if one has a thermistor to add.3. Especially suitable for enterprises, hotels, shopping malls, warehouses and family aisles, it can automatically and quickly open various types of incandescent, fluorescent lamps, buzzer, automatic doors, electric fans,automatic washing machine and dryer Machines and other devices.Package Included:6 X HC-SR501 PIR Infared Sensor1 X 40Pin male to male jumper wire1 X 40Pin male to female jumper wire1 X 40Pin female to female jumper wire