This module uses a simple method, with a control port requiring at least 10µs at a high level, and can wait for output at a high level on the receiving port. An output can drive the timer; when this port is low, it can read the timer value, which is used to calculate the distance.

Technical Specifications:

• Electrical Properties:
• Operating voltage: DC 5V
• Overall working current: 40mA
• Sound emission frequency: 40kHz
• Maximum distance: 4.5m
• Blind zone: 25cm
• Resolution: approximately 0.5cm
• Angle: 70 degrees
• Operating temperature: -10 ~ 70 ℃
• Storage temperature: -20 ~ 80 ℃

Product Features:

• Small size, easy to use.
• Low voltage, low power consumption.
• High accuracy.
• Interference resistance capability.
• Built-in waterproof sensor with wiring, suitable for wet and difficult measurements.

Applications:

• Horizontal distance measurement.
• Obstacle avoidance, automatic control.
• Object proximity detection.
• Traffic control.
• Security, industrial control.
• Artificial intelligence and research.

Basic Operating Principle:

• Using the IO TRIG port for high-level activation, at least 10µs.
• The module automatically sends 8 pulses at 40KHz and detects if there is a return signal.
• The return signal leads to a high-level output via the ECHO port, with the duration of this signal output corresponding to the time required for the ultrasonic beam to return. The measured distance = (high-level time * speed of sound (340M/S)) / 2;