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Products Readymade Sensor Modules » Ultrasonic Range Finder: HC-SR04   Power supply: 5V DC Static current: Less than 2mA. Output signal: Electric frequency signal, highlevel 5V, low level 0V Sensor angle: Not more than 15 degrees. Detection distance:2cm-450cm. High precision: Up to0.3cm Mode of connection: VCC / trig (T) / echo(R)   Brand new Ultrasonic SensorHC-SR04 Distance Measuring Module