Generic Ultrasonic Sensor - Hc-Sr04  (Multicolor)

Ultrasonic Sensor - HC-SR04 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. | 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! | Assembled and Tested; ROHS Compliant Features: Operating Voltage: 5V DC Operating Current: 15mA Measure Angle: 15� Ranging Distance: 2cm - 4m Download documentation here: http://www.electronics123.net/amazon/datasheet/HCSR04.pdf https://codebender.cc/sketch:356078#HC-SR04%20Ultrasonic%20Sensor%20Example.ino