HC-SR501 Pyroelectric Infrared Motion Sensor (PIR)

HC-SR501 Pyroelectric Infrared/Motion Sensor (PIR) is a low cost sensor which can detect the presence of Human beings or animals. This HC-SR501 PIR sensor module has three output pins Vcc, Output and Ground as shown in the pin diagram above. Since the output pin is 3.3V TTL logic it can be used with any platforms like Arduino, Raspberry or other micro-controllers.

Specification:

• Voltage: 5V
• Power Consumption : 65mA
• Temperature: – 15 ~ +70
• Sensing range : < 120 °, within 7 meters
• Dimension 32 x 24 mm
• Lens diameter: 23 mm

Applications :

Automatically senses motion to switch light for Floor, bathroom, basement, porch, warehouse, Garage, etc, ventilator, alarm, etc.