This is the HC-SR04 ultrasonic distance 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.
There are only four pins that you need to worry about on the HC-SR04: VCC (Power), Trig (Trigger), Echo (Receive), and GND (Ground). You will find this sensor very easy to set up and use for your next range-finding project!
This sensor has additional control circuitry that can prevent inconsistent "bouncy" data depending on the application.
- Operation Voltage: 5V DC
- Operation Current: 15mA
- Operation Frequency: 40KHz
- Measure Angle: ≤15°
- Ranging Distance: 2cm - 400cm
- Dimension: 45 x 20 x 12mm
- Weight: 7.7g