HCSR501 HC-SR501 PIR Sensor Specification:

• Use BISS0001 signal processing IC, sanyo genius regulator
• Voltage: 5V  20V
• Power Consumption: 65mA
• TTL output: 3.3V, 0V
• Delay time: adjustable (0.3 sec 10 minutes)
• Lock time: 0.2 sec
• Trigger methods: L  disable repeat trigger, H enable repeat trigger
• Sensing range: less than 120 degree, within 7 meters
• Temperature:  15 ~ +70
• Dimension: 32*24 mm, distance between screw 28mm, M2, Lens dimension in diameter: 23mm

Features:

• Automatic detecting: the output will be high when objects enter the sensing range, and automatically turn to low when object leave
• Photosensitive control (optional, not factory-set yet) can be set.
• Temperature compensation (optional, factory reset): In the summer when the ambient temperature rises to 30 C to 32 C, the detection distance is slightly shorter, temperature compensation can be used for performance compensation.
• Working mode (set by jumper)
  • Non-repeatable trigger/ delay mode (set to LOW): the sensor will turn to low TTL after the delay, even the sensing object is still in range.
  • Repeatable trigger (set to HIGH): the sensor will not turn to low if the object still staty in the sensing range in the delay time.
• Wide operating voltage range: default voltage DC4.5V-20V.
• Micro-amp power level consumption: static current <50 microamps, particularly suitable for battery-powered automatic control products.
• Output high signal: easy to achieve docking with the various types of circuit.