HC-SR04 Ultrasonic Module Distance Measuring Transducer Sensor For Arduino

Features: Working Voltage : 5V(DC) Static current: Less than 2mA. Electrical level output: 5V high Electrical level output: at the end of 0V Induction angle: Not more than 15 degrees. Detection distance: 2cm-450cm High precision: Up to 0.3cm trigger (control side) signal: 10us TTL impulse Echo (receiving side) signal : TTL PWL signal Wiring: VCC trig echo GND Test reference: (1) using IO trigger distance, the high signal to at least 10us; (2) module automatically sends eight 40khz square wave, automatically detects whether a signal return; (3) a signal back, through the IO output a high electrical level, high electrical level duration is: the ultrasound time from launch to return. Test distance = (time of the high electrical level * speed of sound (340M / S)) / 2; Package Includes: 1 x HC-SR04 Ultrasonic Module Distance Measuring Transducer Sensor For Arduino