US-020 ultrasonic ranging module, 5V, can be measured 7M

product description Two Ultrasonic Detector Ranging Module Distance Sensor Technology parameter Electrical parameters US-020 Ultrasonic Ranging Module Operating Voltage DC 5V Quiescent Current 3mA Operating temperature 0 ~ + 70 degrees Output GPIO Sensor angle Not more than 15 degrees Detection distance 2cm ~ 700cm Detection accuracy 0.3cm + 1% Serial configuration in UART 9600 baud rate, 1 start bit, 1 stop bit, 8 data bits, no parity, no flow control