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3pcs HC-SR04-P Ultrasonic Module Distance Measuring Ranging Transducer Sensor DC 3.3V-5V 2-450cm


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                  Working Voltage : 3.3-5V(DC)
                  Static Current: Less than 2mA.
                  Output Signal: Electric frequency signal, high level 5V, low level 0V.
                  Sensor Angle: Not more than 15 degrees.
                  Detection Distance: 3.3V:2cm-400cm / 5V: 2cm-450cm
                  High Precision: Up to 0.3cm
                  Input Trigger Signal: 10us TTL impulse
                  Echo Signal : output TTL PWL signal
                  Compatible with HC-SR0A software and hardware
                  Mode of connection:
                  Use Method:
                  Supply module with 3.3- 5V, the output will be 3.3V-5V while obstacle in range, or 0V if not.The out pin of this
                  module is used as a switching output when anti-theft module, and without the feet when ranging modules.
                  Note : the module should be inserted in the circuit before been power, which avoid producing high level
                  of misoperation;if not, then power again.
                  Module Working Principle:
                  1. Adopt IO trigger through supplying at least 10us sequence of high level signal.
                  2. The module automatically send eight 40khz square wave and automatically detect whether receive
                  the returning pulse signal.
                  3. If there is signals returning, through outputting high level and the time of high level continuing is
                  the time of that from the ultrasonic transmitting to receiving. Test distance =(high level time * sound velocity (340M/S) / 2.
                  Note : 
                  This module is not suitable to connect with electric power, if you need to connect this module with
                  electronic power,then let the GND terminal of this module to be connected first,otherwise, it will affect the
                  normal work of the module
                  Package Included:
                  3 x HC-SR04-P Ultrasonic Module Distance Measuring Transducer

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