1Pcs Ultrasonic Module -SR04 SR04 4Pin Distance Measuring Transducer Sensor

1Pcs Ultrasonic Module -SR04 SR04 4Pin Distance Measuring Transducer Sensor Description

Description/Features: Stable performance and precise distance measurement
High precision module, blind spot (2cm) ultra close
Wiring methods, VCC, trig (control end), (receiver end), GND
Usage: If a control port sends a high level of 10US or more, you can wait for the high level output at the receiving port. Once there is an output, you can start the timer timer. When this port becomes low, you can read the value of the timer. This is the time for this distance measurement, and then the distance can be calculated. This continuous cycle measurement can reach the value of your mobile measurement

Module working principle:
(1) Using IO triggered ranging to provide a high-level signal of at least 10us;
(2) The module automatically sends 8 40kHz square waves and detects whether there is a signal return;
(3) There is a signal return, and a high level is output through IO. The duration of the high level is the time from the emission to the return of the ultrasonic wave. Test distance=(High level time x Sound speed (340M/S))/2;
Specifications:
Type: B--SR04 SR04 4Pin
Operating voltage: DC5V
Quiescent current: less than 2mA
Level output: high 5V
Level output: bottom 0V
Sensing angle: no more than 15 degrees
Detection distance: 2cm-450cm
High precision: up to 0.3cm
Due to different batches, there may be differences in product appearance and printed text, which not affect use.
Material: PCB
colour: As Shown

Package Contents:
1 x module

Only the above package content, other products are not included.
Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.