PIR sensor HC-SR50

Specifications:

• Operating Voltage: 5v
• Quiescent Current: < 50 µA
• Output Voltage (High): 3.3V
• Output Voltage (Low): 0V
• Sensing Distance: Up to 7 meters (can vary with different models)
• Detection Angle: Approximately 120 degrees
• Trigger Mode:
  • Retriggerable (L): The sensor can re-trigger after the delay time if the motion continues.
  • Non-retriggerable (H): The sensor won’t re-trigger until the output has gone low.
• Delay Time: Adjustable from 0.3 seconds to 200 seconds
• Block Time: 2.5 seconds (default)
• Dimensions: Typically around 32mm x 24mm (can vary with different models)
• Operating Temperature Range: -15°C to +70°C

Key Features:

• Adjustable Sensitivity: A potentiometer will be used to adjust the detection range.
• Adjustable Delay Time: Potentiometer to set how long the output stays high after detection.
• Wide Operating Voltage Range: Compatible with various microcontroller voltages.
• Low Power Consumption: Ideal for battery-operated devices.
• Digital Output: Easy interfacing with most microcontrollers.
• Built-in Amplifier and Comparator: Simplifies the sensor design.

Typical Applications:

• Motion-activated lighting
• Security and alarm systems
• Automated door openers
• Human presence detection
• Robotics
• Energy-saving devices

Usage Tips:

• Positioning: Place the sensor in a location with a clear line of sight to the monitored area.
• Environment: Avoid placing the sensor in areas with high airflow or near sources of heat, as this can cause false triggers.
• Calibration: Allow the sensor a few minutes to calibrate after powering it on, as it may initially produce unstable readings.