Product ID: 1304 This is the HC-SR04 ultrasonic ranging sensor. This economical sensor provides 2cm to 400cm of non-contact measurement functionality with a ranging accuracy that can reach up to 3mm. Each HC-SR04 module includes an ultrasonic transmitter, a receiver and a control circuit. Supply voltage: 5 VDC Current consumption: 15mA Working Frequency: 40Hz Max Range: 4m Min Range: 0.02m (2cm) Measuring Angle: 15 degree Trigger Input Signal: 10uS TTL pulse Echo Output Signal: Input TTL lever signal and the range in proportion Operating Recommendation Smooth surface area to reflect signal should be 0.5 square meters or more. Distance computation Distance (cm) = Measured Echo Time (in µsec)/58 Distance (inch) = Measured Echo Time (in µsec)/148

Product ID: 1304 This is the HC-SR04 ultrasonic ranging sensor. This economical sensor provides 2cm to 400cm of non-contact measurement functionality with a ranging accuracy that can reach up to 3mm. Each HC-SR04 module includes an ultrasonic transmitter, a receiver and a control circuit. Supply voltage: 5 VDC Current consumption: 15mA Working Frequency: 40Hz Max Range: 4m Min Range: 0.02m (2cm) Measuring Angle: 15 degree Trigger Input Signal: 10uS TTL pulse Echo Output Signal: Input TTL lever signal and the range in proportion Operating Recommendation Smooth surface area to reflect signal should be 0.5 square meters or more. Distance computation Distance (cm) = Measured Echo Time (in µsec)/58 Distance (inch) = Measured Echo Time (in µsec)/148