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 . When this port becomes low, you can read the value of the . 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: A--SRF05 SRF05 5Pin 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 will 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.