waterproof ultrasonic sensor module SR04

AJ-SR04M Integration Ultrasonic Ranging Module Reversing Radar Waterproof Ultrasonic Square Wave TTL& Serial interface 25cm-5m  

• Small size, easy to use;
• Low voltage, low power consumption;
• High measurement accuracy;
• Strong anti-interference;
• Integrated closed water with a line probe for wet, harsh measurement occasions.
• Working Voltage 5V
• Maximum Current is 30mA 5V
• Standby current< 5mA 5V
• Low power cumsumption :<20uA
• Dead zone:25cm

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