HC-SR04 SR04 Ultrasonic Sensor Measuring Distance Sensor LED Display Module

HC-SR04 SR04 Ultrasonic Sensor Measuring Distance Sensor LED Display Module

Description:
Onboard STM8S103 high performance microprocessor.
Digital tube display for easily viewing data result
Working Voltage: 5V
Data can be output through the serial port
Display Unit: cm
Maximum error: about 1%; Effective Measurement Distance: 3-400cm
Size: 24.2x35.1mm/0.95x1.38 inch

Interface Port Manual:
VCC for 5V power interface
TX for module serial port transmit terminal
RX for module serial port receive terminal
NRST/SWIN for Reserved STM8 programing download port
GND for 5V power interface

Specification:
Test result can be displayed through digital tube and serial port at the same time.
Digital Tube Display: plug in the ultrasonic module directly, connect to the 5V power supply.
Serial Port Output: plug in the ultrasonic module, the port VCC, TX, RX, GND are respectively connected to the 5V, RX, TX, GND of the USB to TTL module. The serial communication baud rate is 9600 and the output format is“D: XXX\R\N", where XXX represents distance. The display unit is cm.

Note:
The area of the tested object which are flat and have strong reflective ability is not less than 0.5 square meters otherwise it will affect the test results.
Effective test distance is 3cm-400cm, over the range may result in data inaccuracy or displaying 000.