Waterproof Ultrasonic Module JSN-SR04T / AJ-SR04M

Description

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Product details

Features

•  Small size and easy to use
• Low voltage and low power consumption
• High measurement accuracy
• Strong anti-interference
• Integrated closed waterproof probe with wire, suitable for wet and harsh measurement occasions

Product parameters

• Working voltage: DC: 3.0V-5.5V
• Working current: less than 8mA
• Probe frequency: 40kHz
• The longest range: 600cm
• Recent range: 20cm
• Long-range accuracy: ±1cm
• Resolution: 1mm
• Mileage angle: 75 degrees
• Input trigger signal: 1. TTL pulse above 10uS; 2. Serial port sending command 0X55
• Output echo signal Output pulse width level signal, or TTL
• Working temperature: -20-+70 degrees
• Function description: 6 modes

Product application

1. Horizontal ranging
2. Obstacle avoidance and automatic control
3. Object approaching, presence awareness
4. Traffic control
5. Security, industrial control
6. Artificial intelligence, teaching and research

Basic working principle:

• Use IO port TRIG to trigger distance measurement, and give a high-level signal of at least 10us
• The module automatically sends 8 40khz square waves and automatically detects whether there is a signal return
• When there is a signal return, a high level is output through the IO port ECHO, and the duration of the high level is the time from the ultrasonic wave to the return. Test distance = (high level time * speed of sound (340M/S))/2